31311012110011 has 16 divisors (see below), whose sum is σ = 32423168512800. Its totient is φ = 30201027268608.

The previous prime is 31311012109967. The next prime is 31311012110033. The reversal of 31311012110011 is 11001121011313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31311012110011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311012111011) 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, 264327145 + ... + 264445573.

It is an arithmetic number, because the mean of its divisors is an integer number (2026448032050).

Almost surely, 2^{31311012110011} is an apocalyptic number.

31311012110011 is a deficient number, since it is larger than the sum of its proper divisors (1112156402789).

31311012110011 is a wasteful number, since it uses less digits than its factorization.

31311012110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127518.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 31311012110011 its reverse (11001121011313), we get a palindrome (42312133121324).

The spelling of 31311012110011 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred ten thousand, eleven".