13312020312 has 48 divisors (see below), whose sum is σ = 37950939000. Its totient is φ = 4203795456.

The previous prime is 13312020299. The next prime is 13312020347. The reversal of 13312020312 is 21302021331.

13312020312 is a `hidden beast` number, since 1 + 331 + 2 + 0 + 20 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4864137 + ... + 4866872.

Almost surely, 2^13312020312 is an apocalyptic number.

13312020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13312020312 is an abundant number, since it is smaller than the sum of its proper divisors (24638918688).

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

13312020312 is a wasteful number, since it uses less digits than its factorization.

13312020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9731040 (or 9731033 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13312020312 its reverse (21302021331), we get a palindrome (34614041643).

The spelling of 13312020312 in words is "thirteen billion, three hundred twelve million, twenty thousand, three hundred twelve".