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13121312023100 = 2252188696953899
BaseRepresentation
bin1011111011110000101100…
…1001000110001000111100
31201110101101210110211010002
42332330023021012020330
53204434421334214400
643523503022133432
72522661225651131
oct276741311061074
951411353424102
1013121312023100
1141a9798624226
12157abb8a21278
1374244692a0c8
143351096dc588
1517b4ae904ed5
hexbef0b24623c

13121312023100 has 36 divisors (see below), whose sum is σ = 28474760181000. Its totient is φ = 5248245898560.

The previous prime is 13121312023073. The next prime is 13121312023133. The reversal of 13121312023100 is 132021312131.

It is a happy number.

13121312023100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131213120231002 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1590050 + ... + 5363849.

Almost surely, 213121312023100 is an apocalyptic number.

13121312023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121312023100 is an abundant number, since it is smaller than the sum of its proper divisors (15353448157900).

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

13121312023100 is a wasteful number, since it uses less digits than its factorization.

13121312023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972782 (or 6972775 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13121312023100 its reverse (132021312131), we get a palindrome (13253333335231).

The spelling of 13121312023100 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twelve million, twenty-three thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 18869 37738 75476 94345 188690 377380 471725 943450 1886900 6953899 13907798 27815596 34769495 69538990 139077980 173847475 347694950 695389900 131213120231 262426240462 524852480924 656065601155 1312131202310 2624262404620 3280328005775 6560656011550 13121312023100