8231137872 has 40 divisors (see below), whose sum is σ = 21267370944. Its totient is φ = 2743248384.

The previous prime is 8231137861. The next prime is 8231137891. The reversal of 8231137872 is 2787311328.

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, 386248 + ... + 407000.

Almost surely, 2^8231137872 is an apocalyptic number.

It is an amenable number.

8231137872 is an abundant number, since it is smaller than the sum of its proper divisors (13036233072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8231137872 is a wasteful number, since it uses less digits than its factorization.

8231137872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29027 (or 29021 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 8231137872 is about 90725.6186090787. The cubic root of 8231137872 is about 2019.0789082293.

The spelling of 8231137872 in words is "eight billion, two hundred thirty-one million, one hundred thirty-seven thousand, eight hundred seventy-two".