31112331021011 has 32 divisors (see below), whose sum is σ = 34748224992000. Its totient is φ = 27683526131712.

The previous prime is 31112331021001. The next prime is 31112331021043. The reversal of 31112331021011 is 11012013321113.

It is a cyclic number.

It is not a de Polignac number, because 31112331021011 - 2³⁰ = 31111257279187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112331021001) 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, 336277820 + ... + 336370326.

It is an arithmetic number, because the mean of its divisors is an integer number (1085882031000).

Almost surely, 2^{31112331021011} is an apocalyptic number.

31112331021011 is a deficient number, since it is larger than the sum of its proper divisors (3635893970989).

31112331021011 is a wasteful number, since it uses less digits than its factorization.

31112331021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94691.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 31112331021011 its reverse (11012013321113), we get a palindrome (42124344342124).

The spelling of 31112331021011 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirty-one million, twenty-one thousand, eleven".