31023113 has 16 divisors (see below), whose sum is σ = 37397376. Its totient is φ = 25386240.

The previous prime is 31023107. The next prime is 31023137. The reversal of 31023113 is 31132013.

It is not a de Polignac number, because 31023113 - 2¹² = 31019017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31023103) 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, 695 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (2337336).

Almost surely, 2^31023113 is an apocalyptic number.

It is an amenable number.

31023113 is a deficient number, since it is larger than the sum of its proper divisors (6374263).

31023113 is a wasteful number, since it uses less digits than its factorization.

31023113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 31023113 is about 5569.8395847636. The cubic root of 31023113 is about 314.2161175980.

Adding to 31023113 its reverse (31132013), we get a palindrome (62155126).

Subtracting 31023113 from its reverse (31132013), we obtain a square (108900 = 330²).

The spelling of 31023113 in words is "thirty-one million, twenty-three thousand, one hundred thirteen".