3157697231 has 12 divisors (see below), whose sum is σ = 3529586880. Its totient is φ = 2820767040.

The previous prime is 3157697201. The next prime is 3157697243. The reversal of 3157697231 is 1327967513.

It is not a de Polignac number, because 3157697231 - 2¹⁰ = 3157696207 is a prime.

It is a super-2 number, since 2×3157697231² = 19942103605330134722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157697201) 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, 296126 + ... + 306603.

It is an arithmetic number, because the mean of its divisors is an integer number (294132240).

Almost surely, 2^3157697231 is an apocalyptic number.

3157697231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3157697231 is a deficient number, since it is larger than the sum of its proper divisors (371889649).

3157697231 is a wasteful number, since it uses less digits than its factorization.

3157697231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602786 (or 602773 counting only the distinct ones).

The product of its digits is 238140, while the sum is 44.

The square root of 3157697231 is about 56193.3913463140. The cubic root of 3157697231 is about 1467.0902428847.

The spelling of 3157697231 in words is "three billion, one hundred fifty-seven million, six hundred ninety-seven thousand, two hundred thirty-one".