311382972312 has 16 divisors (see below), whose sum is σ = 778457430840. Its totient is φ = 103794324096.

The previous prime is 311382972311. The next prime is 311382972379. The reversal of 311382972312 is 213279283113.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311382972311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6487145233 + ... + 6487145280.

Almost surely, 2^311382972312 is an apocalyptic number.

It is an amenable number.

311382972312 is an abundant number, since it is smaller than the sum of its proper divisors (467074458528).

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

311382972312 is a wasteful number, since it uses less digits than its factorization.

311382972312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974290522 (or 12974290518 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The spelling of 311382972312 in words is "three hundred eleven billion, three hundred eighty-two million, nine hundred seventy-two thousand, three hundred twelve".