231401372 has 12 divisors (see below), whose sum is σ = 405107976. Its totient is φ = 115656240.

The previous prime is 231401371. The next prime is 231401383. The reversal of 231401372 is 273104132.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231401371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2438 + ... + 21650.

It is an arithmetic number, because the mean of its divisors is an integer number (33758998).

Almost surely, 2^231401372 is an apocalyptic number.

It is an amenable number.

231401372 is a deficient number, since it is larger than the sum of its proper divisors (173706604).

231401372 is a wasteful number, since it uses less digits than its factorization.

231401372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22228 (or 22226 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 231401372 is about 15211.8825922369. The cubic root of 231401372 is about 613.9344113963.

The spelling of 231401372 in words is "two hundred thirty-one million, four hundred one thousand, three hundred seventy-two".