20312456315530 has 8 divisors (see below), whose sum is σ = 36562421367972. Its totient is φ = 8124982526208.

The previous prime is 20312456315519. The next prime is 20312456315573. The reversal of 20312456315530 is 3551365421302.

It can be written as a sum of positive squares in 2 ways, for example, as 20298169611801 + 14286703729 = 4505349^2 + 119527^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015622815767 + ... + 1015622815786.

Almost surely, 2^{20312456315530} is an apocalyptic number.

20312456315530 is a deficient number, since it is larger than the sum of its proper divisors (16249965052442).

20312456315530 is a wasteful number, since it uses less digits than its factorization.

20312456315530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031245631560.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 20312456315530 in words is "twenty trillion, three hundred twelve billion, four hundred fifty-six million, three hundred fifteen thousand, five hundred thirty".