231304120420 has 24 divisors (see below), whose sum is σ = 485754321024. Its totient is φ = 92518663776.

The previous prime is 231304120391. The next prime is 231304120457. The reversal of 231304120420 is 24021403132.

231304120420 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 2×231304120420² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231304120391 and 231304120400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512997 + ... + 851923.

It is an arithmetic number, because the mean of its divisors is an integer number (20239763376).

Almost surely, 2^231304120420 is an apocalyptic number.

231304120420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231304120420 is an abundant number, since it is smaller than the sum of its proper divisors (254450200604).

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

231304120420 is a wasteful number, since it uses less digits than its factorization.

231304120420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373059 (or 373057 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 231304120420 its reverse (24021403132), we get a palindrome (255325523552).

The spelling of 231304120420 in words is "two hundred thirty-one billion, three hundred four million, one hundred twenty thousand, four hundred twenty".