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12431973024 = 25321911931171
BaseRepresentation
bin10111001010000000…
…01101101010100000
31012002101221122221100
423211000031222200
5200430041114044
65413340154400
7620035012212
oct134500155240
935071848840
1012431973024
1152aa585379
1224ab538a00
1312317bc173
1485d1465b2
154cb64c869
hex2e500daa0

12431973024 has 144 divisors (see below), whose sum is σ = 35753163264. Its totient is φ = 4097433600.

The previous prime is 12431972963. The next prime is 12431973053. The reversal of 12431973024 is 42037913421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×124319730243 (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12431973024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10615959 + ... + 10617129.

It is an arithmetic number, because the mean of its divisors is an integer number (248285856).

Almost surely, 212431973024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12431973024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17876581632).

12431973024 is an abundant number, since it is smaller than the sum of its proper divisors (23321190240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12431973024 is a wasteful number, since it uses less digits than its factorization.

12431973024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 12431973024 in words is "twelve billion, four hundred thirty-one million, nine hundred seventy-three thousand, twenty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 191 193 288 382 386 573 579 764 772 1146 1158 1171 1528 1544 1719 1737 2292 2316 2342 3056 3088 3438 3474 3513 4584 4632 4684 6112 6176 6876 6948 7026 9168 9264 9368 10539 13752 13896 14052 18336 18528 18736 21078 27504 27792 28104 36863 37472 42156 55008 55584 56208 73726 84312 110589 112416 147452 168624 221178 223661 226003 294904 331767 337248 442356 447322 452006 589808 663534 670983 678009 884712 894644 904012 1179616 1327068 1341966 1356018 1769424 1789288 1808024 2012949 2034027 2654136 2683932 2712036 3538848 3578576 3616048 4025898 4068054 5308272 5367864 5424072 7157152 7232096 8051796 8136108 10616544 10735728 10848144 16103592 16272216 21471456 21696288 32207184 32544432 43166573 64414368 65088864 86333146 129499719 172666292 258999438 345332584 388499157 517998876 690665168 776998314 1035997752 1381330336 1553996628 2071995504 3107993256 4143991008 6215986512 12431973024