31955113 has 8 divisors (see below), whose sum is σ = 32979240. Its totient is φ = 30942720.

The previous prime is 31955111. The next prime is 31955117. The reversal of 31955113 is 31155913.

It can be written as a sum of positive squares in 4 ways, for example, as 5822569 + 26132544 = 2413^2 + 5112^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31955113 - 2¹ = 31955111 is a prime.

It is a super-2 number, since 2×31955113² = 2042258493685538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31955111) 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, 2773 + ... + 8461.

It is an arithmetic number, because the mean of its divisors is an integer number (4122405).

Almost surely, 2^31955113 is an apocalyptic number.

It is an amenable number.

31955113 is a deficient number, since it is larger than the sum of its proper divisors (1024127).

31955113 is a wasteful number, since it uses less digits than its factorization.

31955113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5867.

The product of its digits is 2025, while the sum is 28.

The square root of 31955113 is about 5652.8853694375. The cubic root of 31955113 is about 317.3316957826.

The spelling of 31955113 in words is "thirty-one million, nine hundred fifty-five thousand, one hundred thirteen".