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123313164 = 223133143593
BaseRepresentation
bin1110101100110…
…01110000001100
322121000221212020
413112121300030
5223032010124
620123010140
73025100412
oct726316014
9277027766
10123313164
1163675007
1235369950
131c716c90
141253d2b2
15ac5c379
hex7599c0c

123313164 has 96 divisors (see below), whose sum is σ = 327849984. Its totient is φ = 35804160.

The previous prime is 123313163. The next prime is 123313181. The reversal of 123313164 is 461313321.

It is a happy number.

It is a super-2 number, since 2×1233131642 = 30412272831381792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (123313163) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 207652 + ... + 208244.

It is an arithmetic number, because the mean of its divisors is an integer number (3415104).

Almost surely, 2123313164 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 123313164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163924992).

123313164 is an abundant number, since it is smaller than the sum of its proper divisors (204536820).

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

123313164 is a wasteful number, since it uses less digits than its factorization.

123313164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 685 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 123313164 is about 11104.6460546926. The cubic root of 123313164 is about 497.7406917627.

Adding to 123313164 its reverse (461313321), we get a palindrome (584626485).

The spelling of 123313164 in words is "one hundred twenty-three million, three hundred thirteen thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 12 13 26 31 39 43 52 62 78 86 93 124 129 156 172 186 258 372 403 516 559 593 806 1118 1186 1209 1333 1612 1677 1779 2236 2372 2418 2666 3354 3558 3999 4836 5332 6708 7116 7709 7998 15418 15996 17329 18383 23127 25499 30836 34658 36766 46254 50998 51987 55149 69316 73532 76497 92508 101996 103974 110298 152994 207948 220596 238979 305988 331487 477958 662974 716937 790469 955916 994461 1325948 1433874 1580938 1988922 2371407 2867748 3161876 3977844 4742814 9485628 10276097 20552194 30828291 41104388 61656582 123313164