13157731400 has 96 divisors (see below), whose sum is σ = 35335997280. Its totient is φ = 4503168000.

The previous prime is 13157731397. The next prime is 13157731409. The reversal of 13157731400 is 413775131.

It is not an unprimeable number, because it can be changed into a prime (13157731409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138506 + ... + 213305.

It is an arithmetic number, because the mean of its divisors is an integer number (368083305).

Almost surely, 2^13157731400 is an apocalyptic number.

13157731400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13157731400 is an abundant number, since it is smaller than the sum of its proper divisors (22178265880).

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

13157731400 is a wasteful number, since it uses less digits than its factorization.

13157731400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351855 (or 351846 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The spelling of 13157731400 in words is "thirteen billion, one hundred fifty-seven million, seven hundred thirty-one thousand, four hundred".