312020013132 has 72 divisors (see below), whose sum is σ = 793021092864. Its totient is φ = 103440040416.

The previous prime is 312020013073. The next prime is 312020013133. The reversal of 312020013132 is 231310020213.

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

It is not an unprimeable number, because it can be changed into a prime (312020013133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8515483 + ... + 8552045.

Almost surely, 2^312020013132 is an apocalyptic number.

It is an amenable number.

312020013132 is an abundant number, since it is smaller than the sum of its proper divisors (481001079732).

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

312020013132 is a wasteful number, since it uses less digits than its factorization.

312020013132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37859 (or 37854 counting only the distinct ones).

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

Adding to 312020013132 its reverse (231310020213), we get a palindrome (543330033345).

The spelling of 312020013132 in words is "three hundred twelve billion, twenty million, thirteen thousand, one hundred thirty-two".