311031139001856 has 960 divisors, whose sum is σ = 1063125692975808. Its totient is φ = 80070618120192.

The previous prime is 311031139001789. The next prime is 311031139001879. The reversal of 311031139001856 is 658100931130113.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6928254546 + ... + 6928299438.

Almost surely, 2^{311031139001856} 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 311031139001856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531562846487904).

311031139001856 is an abundant number, since it is smaller than the sum of its proper divisors (752094553973952).

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

311031139001856 is a wasteful number, since it uses less digits than its factorization.

311031139001856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45111 (or 45088 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 311031139001856 in words is "three hundred eleven trillion, thirty-one billion, one hundred thirty-nine million, one thousand, eight hundred fifty-six".