157031677 has 4 divisors (see below), whose sum is σ = 171307296. Its totient is φ = 142756060.

The previous prime is 157031659. The next prime is 157031683. The reversal of 157031677 is 776130751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157031677 - 2¹⁵ = 156998909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157031377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7137793 + ... + 7137814.

It is an arithmetic number, because the mean of its divisors is an integer number (42826824).

Almost surely, 2^157031677 is an apocalyptic number.

It is an amenable number.

157031677 is a deficient number, since it is larger than the sum of its proper divisors (14275619).

157031677 is a wasteful number, since it uses less digits than its factorization.

157031677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14275618.

The product of its (nonzero) digits is 30870, while the sum is 37.

The square root of 157031677 is about 12531.2280723000. The cubic root of 157031677 is about 539.5053506432.

The spelling of 157031677 in words is "one hundred fifty-seven million, thirty-one thousand, six hundred seventy-seven".