31213311100011 has 72 divisors (see below), whose sum is σ = 49083222361680. Its totient is φ = 19097092179072.

The previous prime is 31213311099991. The next prime is 31213311100021. The reversal of 31213311100011 is 11000111331213.

31213311100011 is a `hidden beast` number, since 31 + 213 + 311 + 100 + 0 + 11 = 666.

It is not a de Polignac number, because 31213311100011 - 2⁵ = 31213311099979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31213311100021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26961856 + ... + 28095698.

It is an arithmetic number, because the mean of its divisors is an integer number (681711421690).

Almost surely, 2^{31213311100011} is an apocalyptic number.

31213311100011 is a deficient number, since it is larger than the sum of its proper divisors (17869911261669).

31213311100011 is a wasteful number, since it uses less digits than its factorization.

31213311100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134153 (or 1134131 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 31213311100011 its reverse (11000111331213), we get a palindrome (42213422431224).

The spelling of 31213311100011 in words is "thirty-one trillion, two hundred thirteen billion, three hundred eleven million, one hundred thousand, eleven".