12312113020 has 24 divisors (see below), whose sum is σ = 25932173904. Its totient is φ = 4910228736.

The previous prime is 12312113017. The next prime is 12312113041. The reversal of 12312113020 is 2031121321.

It is a junction number, because it is equal to n+sod(n) for n = 12312112985 and 12312113003.

It is a congruent number.

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, 906622 + ... + 920101.

It is an arithmetic number, because the mean of its divisors is an integer number (1080507246).

Almost surely, 2^12312113020 is an apocalyptic number.

12312113020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312113020 is an abundant number, since it is smaller than the sum of its proper divisors (13620060884).

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

12312113020 is a wasteful number, since it uses less digits than its factorization.

12312113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827069 (or 1827067 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12312113020 its reverse (2031121321), we get a palindrome (14343234341).

The spelling of 12312113020 in words is "twelve billion, three hundred twelve million, one hundred thirteen thousand, twenty".