31032113 has 8 divisors (see below), whose sum is σ = 35502720. Its totient is φ = 26570880.

The previous prime is 31032097. The next prime is 31032139. The reversal of 31032113 is 31123013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31032113 - 2⁴ = 31032097 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 (31032413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7553 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (4437840).

Almost surely, 2^31032113 is an apocalyptic number.

It is an amenable number.

31032113 is a deficient number, since it is larger than the sum of its proper divisors (4470607).

31032113 is a wasteful number, since it uses less digits than its factorization.

31032113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687.

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

The square root of 31032113 is about 5570.6474489057. The cubic root of 31032113 is about 314.2465000168.

Adding to 31032113 its reverse (31123013), we get a palindrome (62155126).

It can be divided in two parts, 310 and 32113, that added together give a palindrome (32423).

The spelling of 31032113 in words is "thirty-one million, thirty-two thousand, one hundred thirteen".