156938631 has 8 divisors (see below), whose sum is σ = 209814000. Its totient is φ = 104344512.

The previous prime is 156938627. The next prime is 156938653. The reversal of 156938631 is 136839651.

It is a happy number.

156938631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156938631 - 2² = 156938627 is a prime.

It is a super-2 number, since 2×156938631² = 49259467800308322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156938681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69006 + ... + 71243.

It is an arithmetic number, because the mean of its divisors is an integer number (26226750).

Almost surely, 2^156938631 is an apocalyptic number.

156938631 is a deficient number, since it is larger than the sum of its proper divisors (52875369).

156938631 is a wasteful number, since it uses less digits than its factorization.

156938631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140625.

The product of its digits is 116640, while the sum is 42.

The square root of 156938631 is about 12527.5149570855. The cubic root of 156938631 is about 539.3987718649.

The spelling of 156938631 in words is "one hundred fifty-six million, nine hundred thirty-eight thousand, six hundred thirty-one".