13601857131 has 24 divisors (see below), whose sum is σ = 21113346384. Its totient is φ = 8407111680.

The previous prime is 13601857117. The next prime is 13601857187. The reversal of 13601857131 is 13175810631.

13601857131 is a `hidden beast` number, since 13 + 60 + 18 + 571 + 3 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13601857131 is a prime.

It is a super-2 number, since 2×13601857131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13601857331) 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, 653190 + ... + 673691.

It is an arithmetic number, because the mean of its divisors is an integer number (879722766).

Almost surely, 2^13601857131 is an apocalyptic number.

13601857131 is a deficient number, since it is larger than the sum of its proper divisors (7511489253).

13601857131 is a wasteful number, since it uses less digits than its factorization.

13601857131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326971 (or 1326968 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 13601857131 in words is "thirteen billion, six hundred one million, eight hundred fifty-seven thousand, one hundred thirty-one".