20312520484 has 9 divisors (see below), whose sum is σ = 35547409681. Its totient is φ = 10156117720.

The previous prime is 20312520469. The next prime is 20312520497. The reversal of 20312520484 is 48402521302.

The square root of 20312520484 is 142522.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9521466084 + 10791054400 = 97578^2 + 103880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 249414 + ... + 320674.

Almost surely, 2^20312520484 is an apocalyptic number.

20312520484 is the 142522-nd square number.

It is an amenable number.

20312520484 is a deficient number, since it is larger than the sum of its proper divisors (15234889197).

20312520484 is an frugal number, since it uses more digits than its factorization.

20312520484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142526 (or 71263 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 20312520484 in words is "twenty billion, three hundred twelve million, five hundred twenty thousand, four hundred eighty-four".