157031123 has 2 divisors, whose sum is σ = 157031124. Its totient is φ = 157031122.

The previous prime is 157031117. The next prime is 157031137. The reversal of 157031123 is 321130751.

157031123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157031123 - 2⁶ = 157031059 is a prime.

It is a super-2 number, since 2×157031123² = 49317547181282258, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (157031113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78515561 + 78515562.

It is an arithmetic number, because the mean of its divisors is an integer number (78515562).

Almost surely, 2^157031123 is an apocalyptic number.

157031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

157031123 is an equidigital number, since it uses as much as digits as its factorization.

157031123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 157031123 is about 12531.2059675037. The cubic root of 157031123 is about 539.5047161931.

Adding to 157031123 its reverse (321130751), we get a palindrome (478161874).

The spelling of 157031123 in words is "one hundred fifty-seven million, thirty-one thousand, one hundred twenty-three".