231300023220 has 144 divisors (see below), whose sum is σ = 809334384768. Its totient is φ = 52374447360.

The previous prime is 231300023219. The next prime is 231300023233. The reversal of 231300023220 is 22320003132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231300023193 and 231300023202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 722991 + ... + 992630.

It is an arithmetic number, because the mean of its divisors is an integer number (5620377672).

Almost surely, 2^231300023220 is an apocalyptic number.

231300023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231300023220 is an abundant number, since it is smaller than the sum of its proper divisors (578034361548).

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

231300023220 is a wasteful number, since it uses less digits than its factorization.

231300023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715750 (or 1715745 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 231300023220 its reverse (22320003132), we get a palindrome (253620026352).

The spelling of 231300023220 in words is "two hundred thirty-one billion, three hundred million, twenty-three thousand, two hundred twenty".