20312012572 has 12 divisors (see below), whose sum is σ = 36692668096. Its totient is φ = 9828393120.

The previous prime is 20312012549. The next prime is 20312012579. The reversal of 20312012572 is 27521021302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312012579) 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, 81903153 + ... + 81903400.

Almost surely, 2^20312012572 is an apocalyptic number.

It is an amenable number.

20312012572 is a deficient number, since it is larger than the sum of its proper divisors (16380655524).

20312012572 is a wasteful number, since it uses less digits than its factorization.

20312012572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163806588 (or 163806586 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 20312012572 its reverse (27521021302), we get a palindrome (47833033874).

The spelling of 20312012572 in words is "twenty billion, three hundred twelve million, twelve thousand, five hundred seventy-two".