20310430312 has 8 divisors (see below), whose sum is σ = 38082056850. Its totient is φ = 10155215152.

The previous prime is 20310430297. The next prime is 20310430331. The reversal of 20310430312 is 21303401302.

It can be written as a sum of positive squares in only one way, i.e., 16644612196 + 3665818116 = 129014^2 + 60546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20310430312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269401887 + ... + 1269401902.

Almost surely, 2^20310430312 is an apocalyptic number.

It is an amenable number.

20310430312 is a deficient number, since it is larger than the sum of its proper divisors (17771626538).

20310430312 is a wasteful number, since it uses less digits than its factorization.

20310430312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538803795 (or 2538803791 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20310430312 its reverse (21303401302), we get a palindrome (41613831614).

The spelling of 20310430312 in words is "twenty billion, three hundred ten million, four hundred thirty thousand, three hundred twelve".