231009372 has 72 divisors (see below), whose sum is σ = 670575360. Its totient is φ = 66316320.

The previous prime is 231009347. The next prime is 231009377. The reversal of 231009372 is 273900132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231009377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7828 + ... + 22875.

Almost surely, 2^231009372 is an apocalyptic number.

231009372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231009372 is an abundant number, since it is smaller than the sum of its proper divisors (439565988).

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

231009372 is a wasteful number, since it uses less digits than its factorization.

231009372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30743 (or 30738 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 231009372 is about 15198.9924666078. The cubic root of 231009372 is about 613.5875417828.

The spelling of 231009372 in words is "two hundred thirty-one million, nine thousand, three hundred seventy-two".