231563020 has 48 divisors (see below), whose sum is σ = 537864768. Its totient is φ = 83185920.

The previous prime is 231562951. The next prime is 231563047. The reversal of 231563020 is 20365132.

It is a junction number, because it is equal to n+sod(n) for n = 231562982 and 231563000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2416 + ... + 21655.

It is an arithmetic number, because the mean of its divisors is an integer number (11205516).

Almost surely, 2^231563020 is an apocalyptic number.

231563020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231563020 is an abundant number, since it is smaller than the sum of its proper divisors (306301748).

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

231563020 is a wasteful number, since it uses less digits than its factorization.

231563020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24130 (or 24128 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 231563020 is about 15217.1948794776. The cubic root of 231563020 is about 614.0773350231.

The spelling of 231563020 in words is "two hundred thirty-one million, five hundred sixty-three thousand, twenty".