231677665620 has 48 divisors (see below), whose sum is σ = 649833632448. Its totient is φ = 61672504320.

The previous prime is 231677665619. The next prime is 231677665657. The reversal of 231677665620 is 26566776132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3346909 + ... + 3415428.

It is an arithmetic number, because the mean of its divisors is an integer number (13538200676).

Almost surely, 2^231677665620 is an apocalyptic number.

231677665620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231677665620 is an abundant number, since it is smaller than the sum of its proper divisors (418155966828).

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

231677665620 is a wasteful number, since it uses less digits than its factorization.

231677665620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762920 (or 6762918 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 231677665620 in words is "two hundred thirty-one billion, six hundred seventy-seven million, six hundred sixty-five thousand, six hundred twenty".