31133113 has 16 divisors (see below), whose sum is σ = 34802496. Its totient is φ = 27613440.

The previous prime is 31133087. The next prime is 31133131.

31133113 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31133113 - 2⁹ = 31132601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133183) 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, 109870 + ... + 110152.

It is an arithmetic number, because the mean of its divisors is an integer number (2175156).

Almost surely, 2^31133113 is an apocalyptic number.

It is an amenable number.

31133113 is a deficient number, since it is larger than the sum of its proper divisors (3669383).

31133113 is a wasteful number, since it uses less digits than its factorization.

31133113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 81, while the sum is 16.

The square root of 31133113 is about 5579.7054581761. The cubic root of 31133113 is about 314.5870561065.

It can be divided in two parts, 3113 and 3113, that added together give a palindrome (6226).

The spelling of 31133113 in words is "thirty-one million, one hundred thirty-three thousand, one hundred thirteen".