31113013011 has 16 divisors (see below), whose sum is σ = 42828979200. Its totient is φ = 20069739360.

The previous prime is 31113013007. The next prime is 31113013079. The reversal of 31113013011 is 11031031113.

It is not a de Polignac number, because 31113013011 - 2² = 31113013007 is a prime.

It is a super-2 number, since 2×31113013011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31113013511) 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, 660696 + ... + 706218.

It is an arithmetic number, because the mean of its divisors is an integer number (2676811200).

Almost surely, 2^31113013011 is an apocalyptic number.

31113013011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31113013011 is a deficient number, since it is larger than the sum of its proper divisors (11715966189).

31113013011 is a wasteful number, since it uses less digits than its factorization.

31113013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52906.

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 31113013011 its reverse (11031031113), we get a palindrome (42144044124).

The spelling of 31113013011 in words is "thirty-one billion, one hundred thirteen million, thirteen thousand, eleven".