311429271808 has 36 divisors (see below), whose sum is σ = 624356734540. Its totient is φ = 155034630144.

The previous prime is 311429271781. The next prime is 311429271851. The reversal of 311429271808 is 808172924113.

It can be written as a sum of positive squares in 2 ways, for example, as 246285897984 + 65143373824 = 496272^2 + 255232^2 .

It is a super-2 number, since 2×311429271808² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2597535 + ... + 2714782.

Almost surely, 2^311429271808 is an apocalyptic number.

It is an amenable number.

311429271808 is an abundant number, since it is smaller than the sum of its proper divisors (312927462732).

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

311429271808 is an equidigital number, since it uses as much as digits as its factorization.

311429271808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312562 (or 5312548 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 311429271808 in words is "three hundred eleven billion, four hundred twenty-nine million, two hundred seventy-one thousand, eight hundred eight".