31112021113 has 16 divisors (see below), whose sum is σ = 33813795600. Its totient is φ = 28516608000.

The previous prime is 31112021093. The next prime is 31112021131.

It is a happy number.

31112021113 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 747913104 + 30364108009 = 27348^2 + 174253^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112021113 - 2⁵ = 31112021081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31112031113) 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, 43788 + ... + 253261.

It is an arithmetic number, because the mean of its divisors is an integer number (2113362225).

Almost surely, 2^31112021113 is an apocalyptic number.

It is an amenable number.

31112021113 is a deficient number, since it is larger than the sum of its proper divisors (2701774487).

31112021113 is a wasteful number, since it uses less digits than its factorization.

31112021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297228.

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 311120 and 21113, that added together give a palindrome (332233).

The spelling of 31112021113 in words is "thirty-one billion, one hundred twelve million, twenty-one thousand, one hundred thirteen".