12312303020 has 24 divisors (see below), whose sum is σ = 25898457984. Its totient is φ = 4916802816.

The previous prime is 12312303019. The next prime is 12312303043. The reversal of 12312303020 is 2030321321.

It is a super-2 number, since 2×12312303020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12312303020.

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, 494957 + ... + 519236.

It is an arithmetic number, because the mean of its divisors is an integer number (1079102416).

Almost surely, 2^12312303020 is an apocalyptic number.

12312303020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312303020 is an abundant number, since it is smaller than the sum of its proper divisors (13586154964).

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

12312303020 is a wasteful number, since it uses less digits than its factorization.

12312303020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014809 (or 1014807 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12312303020 its reverse (2030321321), we get a palindrome (14342624341).

The spelling of 12312303020 in words is "twelve billion, three hundred twelve million, three hundred three thousand, twenty".