31311013331011 has 16 divisors (see below), whose sum is σ = 31442274057600. Its totient is φ = 31179929378688.

The previous prime is 31311013330973. The next prime is 31311013331051. The reversal of 31311013331011 is 11013331011313.

It is a cyclic number.

It is not a de Polignac number, because 31311013331011 - 2²³ = 31311004942403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311013331051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2487166105 + ... + 2487178693.

It is an arithmetic number, because the mean of its divisors is an integer number (1965142128600).

Almost surely, 2^{31311013331011} is an apocalyptic number.

31311013331011 is a deficient number, since it is larger than the sum of its proper divisors (131260726589).

31311013331011 is a wasteful number, since it uses less digits than its factorization.

31311013331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18798.

The product of its (nonzero) digits is 243, while the sum is 22.

Adding to 31311013331011 its reverse (11013331011313), we get a palindrome (42324344342324).

The spelling of 31311013331011 in words is "thirty-one trillion, three hundred eleven billion, thirteen million, three hundred thirty-one thousand, eleven".