20312123300 has 72 divisors (see below), whose sum is σ = 50392774656. Its totient is φ = 6961570560.

The previous prime is 20312123297. The next prime is 20312123309. The reversal of 20312123300 is 332121302.

It is not an unprimeable number, because it can be changed into a prime (20312123309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3688349 + ... + 3693851.

It is an arithmetic number, because the mean of its divisors is an integer number (699899648).

Almost surely, 2^20312123300 is an apocalyptic number.

20312123300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312123300 is an abundant number, since it is smaller than the sum of its proper divisors (30080651356).

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

20312123300 is a wasteful number, since it uses less digits than its factorization.

20312123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10797 (or 10790 counting only the distinct ones).

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

Adding to 20312123300 its reverse (332121302), we get a palindrome (20644244602).

The spelling of 20312123300 in words is "twenty billion, three hundred twelve million, one hundred twenty-three thousand, three hundred".