231153020 has 24 divisors (see below), whose sum is σ = 554767584. Its totient is φ = 79252416.

The previous prime is 231153007. The next prime is 231153047. The reversal of 231153020 is 20351132.

It is a self number, because there is not a number n which added to its sum of digits gives 231153020.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 825407 + ... + 825686.

It is an arithmetic number, because the mean of its divisors is an integer number (23115316).

Almost surely, 2^231153020 is an apocalyptic number.

231153020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231153020 is an abundant number, since it is smaller than the sum of its proper divisors (323614564).

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

231153020 is a wasteful number, since it uses less digits than its factorization.

231153020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651109 (or 1651107 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 231153020 is about 15203.7173086058. The cubic root of 231153020 is about 613.7146973167.

The spelling of 231153020 in words is "two hundred thirty-one million, one hundred fifty-three thousand, twenty".