231872380 has 24 divisors (see below), whose sum is σ = 487273248. Its totient is φ = 92683968.

The previous prime is 231872357. The next prime is 231872393. The reversal of 231872380 is 83278132.

231872380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 33802 + ... + 40078.

It is an arithmetic number, because the mean of its divisors is an integer number (20303052).

Almost surely, 2^231872380 is an apocalyptic number.

231872380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231872380 is an abundant number, since it is smaller than the sum of its proper divisors (255400868).

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

231872380 is a wasteful number, since it uses less digits than its factorization.

231872380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8133 (or 8131 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 231872380 is about 15227.3563037055. The cubic root of 231872380 is about 614.3506751976.

The spelling of 231872380 in words is "two hundred thirty-one million, eight hundred seventy-two thousand, three hundred eighty".