157102731 has 12 divisors (see below), whose sum is σ = 227061120. Its totient is φ = 104672880.

The previous prime is 157102723. The next prime is 157102733. The reversal of 157102731 is 137201751.

It is a happy number.

157102731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157102731 - 2³ = 157102723 is a prime.

It is a super-2 number, since 2×157102731² = 49362536175316722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157102695 and 157102704.

It is not an unprimeable number, because it can be changed into a prime (157102733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14865 + ... + 23133.

It is an arithmetic number, because the mean of its divisors is an integer number (18921760).

Almost surely, 2^157102731 is an apocalyptic number.

157102731 is a deficient number, since it is larger than the sum of its proper divisors (69958389).

157102731 is a wasteful number, since it uses less digits than its factorization.

157102731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386 (or 10383 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 157102731 is about 12534.0628289474. The cubic root of 157102731 is about 539.5867105182.

The spelling of 157102731 in words is "one hundred fifty-seven million, one hundred two thousand, seven hundred thirty-one".