3931000157 has 12 divisors (see below), whose sum is σ = 4577648796. Its totient is φ = 3365853120.

The previous prime is 3931000123. The next prime is 3931000159. The reversal of 3931000157 is 7510001393.

It can be written as a sum of positive squares in 2 ways, for example, as 3138352441 + 792647716 = 56021^2 + 28154^2 .

It is not a de Polignac number, because 3931000157 - 2¹⁶ = 3930934621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931000159) 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, 4607 + ... + 88787.

It is an arithmetic number, because the mean of its divisors is an integer number (381470733).

Almost surely, 2^3931000157 is an apocalyptic number.

It is an amenable number.

3931000157 is a deficient number, since it is larger than the sum of its proper divisors (646648639).

3931000157 is an equidigital number, since it uses as much as digits as its factorization.

3931000157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85148 (or 85141 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 3931000157 is about 62697.6886097087. The cubic root of 3931000157 is about 1578.2205246583.

The spelling of 3931000157 in words is "three billion, nine hundred thirty-one million, one hundred fifty-seven", and thus it is an aban number.