157231864 has 32 divisors (see below), whose sum is σ = 308823840. Its totient is φ = 74905600.

The previous prime is 157231847. The next prime is 157231871. The reversal of 157231864 is 468132751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50184 + ... + 53224.

It is an arithmetic number, because the mean of its divisors is an integer number (9650745).

Almost surely, 2^157231864 is an apocalyptic number.

It is an amenable number.

157231864 is a deficient number, since it is larger than the sum of its proper divisors (151591976).

157231864 is a wasteful number, since it uses less digits than its factorization.

157231864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351 (or 3347 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 157231864 is about 12539.2130534575. The cubic root of 157231864 is about 539.7345105551.

The spelling of 157231864 in words is "one hundred fifty-seven million, two hundred thirty-one thousand, eight hundred sixty-four".