12313312020 has 72 divisors (see below), whose sum is σ = 37499323680. Its totient is φ = 3270456000.

The previous prime is 12313312013. The next prime is 12313312049. The reversal of 12313312020 is 2021331321.

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 = 12313311984 and 12313312002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91090 + ... + 181449.

It is an arithmetic number, because the mean of its divisors is an integer number (520823940).

Almost surely, 2^12313312020 is an apocalyptic number.

12313312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12313312020 is an abundant number, since it is smaller than the sum of its proper divisors (25186011660).

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

12313312020 is a wasteful number, since it uses less digits than its factorization.

12313312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272805 (or 272800 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12313312020 its reverse (2021331321), we get a palindrome (14334643341).

The spelling of 12313312020 in words is "twelve billion, three hundred thirteen million, three hundred twelve thousand, twenty".