311697933456 has 160 divisors (see below), whose sum is σ = 991292608768. Its totient is φ = 82185062400.

The previous prime is 311697933451. The next prime is 311697933553. The reversal of 311697933456 is 654339796113.

It is a junction number, because it is equal to n+sod(n) for n = 311697933396 and 311697933405.

It is not an unprimeable number, because it can be changed into a prime (311697933451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24895710 + ... + 24908226.

Almost surely, 2^311697933456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311697933456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495646304384).

311697933456 is an abundant number, since it is smaller than the sum of its proper divisors (679594675312).

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

311697933456 is a wasteful number, since it uses less digits than its factorization.

311697933456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18249 (or 18243 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 57.

The spelling of 311697933456 in words is "three hundred eleven billion, six hundred ninety-seven million, nine hundred thirty-three thousand, four hundred fifty-six".