20312321372 has 12 divisors (see below), whose sum is σ = 40624642800. Its totient is φ = 8705280576.

The previous prime is 20312321371. The next prime is 20312321377. The reversal of 20312321372 is 27312321302.

It is a happy number.

20312321372 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312321371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362719997 + ... + 362720052.

It is an arithmetic number, because the mean of its divisors is an integer number (3385386900).

Almost surely, 2^20312321372 is an apocalyptic number.

It is an amenable number.

20312321372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20312321372 is a wasteful number, since it uses less digits than its factorization.

20312321372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725440060 (or 725440058 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 20312321372 its reverse (27312321302), we get a palindrome (47624642674).

The spelling of 20312321372 in words is "twenty billion, three hundred twelve million, three hundred twenty-one thousand, three hundred seventy-two".