157000331 has 2 divisors, whose sum is σ = 157000332. Its totient is φ = 157000330.

The previous prime is 157000313. The next prime is 157000379. The reversal of 157000331 is 133000751.

It is a happy number.

157000331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (157000313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157000331 - 2¹⁸ = 156738187 is a prime.

It is a super-2 number, since 2×157000331² = 49298207868219122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (157000301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78500165 + 78500166.

It is an arithmetic number, because the mean of its divisors is an integer number (78500166).

Almost surely, 2^157000331 is an apocalyptic number.

157000331 is a deficient number, since it is larger than the sum of its proper divisors (1).

157000331 is an equidigital number, since it uses as much as digits as its factorization.

157000331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 157000331 is about 12529.9772944726. The cubic root of 157000331 is about 539.4694503280.

The spelling of 157000331 in words is "one hundred fifty-seven million, three hundred thirty-one", and thus it is an aban number.