231283320 has 32 divisors (see below), whose sum is σ = 693850320. Its totient is φ = 61675520.

The previous prime is 231283309. The next prime is 231283357. The reversal of 231283320 is 23382132.

231283320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231283320² = 106983948220444800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 963561 + ... + 963800.

Almost surely, 2^231283320 is an apocalyptic number.

231283320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231283320 is an abundant number, since it is smaller than the sum of its proper divisors (462567000).

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

231283320 is a wasteful number, since it uses less digits than its factorization.

231283320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927375 (or 1927371 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231283320 is about 15208.0018411361. The cubic root of 231283320 is about 613.8299918001.

The spelling of 231283320 in words is "two hundred thirty-one million, two hundred eighty-three thousand, three hundred twenty".