231063320 has 32 divisors (see below), whose sum is σ = 550476000. Its totient is φ = 86988288.

The previous prime is 231063311. The next prime is 231063347. The reversal of 231063320 is 23360132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231063292 and 231063301.

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, 169220 + ... + 170579.

It is an arithmetic number, because the mean of its divisors is an integer number (17202375).

Almost surely, 2^231063320 is an apocalyptic number.

231063320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231063320 is an abundant number, since it is smaller than the sum of its proper divisors (319412680).

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

231063320 is a wasteful number, since it uses less digits than its factorization.

231063320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339827 (or 339823 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 231063320 is about 15200.7670859072. The cubic root of 231063320 is about 613.6353021023.

The spelling of 231063320 in words is "two hundred thirty-one million, sixty-three thousand, three hundred twenty".