311431129986 has 32 divisors (see below), whose sum is σ = 624320640000. Its totient is φ = 103567548240.

The previous prime is 311431129967. The next prime is 311431129991. The reversal of 311431129986 is 689921134113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5474115 + ... + 5530713.

It is an arithmetic number, because the mean of its divisors is an integer number (19510020000).

Almost surely, 2^311431129986 is an apocalyptic number.

311431129986 is an abundant number, since it is smaller than the sum of its proper divisors (312889510014).

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

311431129986 is a wasteful number, since it uses less digits than its factorization.

311431129986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58734.

The product of its digits is 279936, while the sum is 48.

The spelling of 311431129986 in words is "three hundred eleven billion, four hundred thirty-one million, one hundred twenty-nine thousand, nine hundred eighty-six".