31013312011 has 16 divisors (see below), whose sum is σ = 34560288000. Its totient is φ = 27592250400.

The previous prime is 31013312009. The next prime is 31013312021. The reversal of 31013312011 is 11021331013.

It is not a de Polignac number, because 31013312011 - 2¹ = 31013312009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013312021) 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, 17400 + ... + 249658.

It is an arithmetic number, because the mean of its divisors is an integer number (2160018000).

Almost surely, 2^31013312011 is an apocalyptic number.

31013312011 is a deficient number, since it is larger than the sum of its proper divisors (3546975989).

31013312011 is a wasteful number, since it uses less digits than its factorization.

31013312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232530.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31013312011 its reverse (11021331013), we get a palindrome (42034643024).

The spelling of 31013312011 in words is "thirty-one billion, thirteen million, three hundred twelve thousand, eleven".