31116893 has 8 divisors (see below), whose sum is σ = 31753176. Its totient is φ = 30484800.

The previous prime is 31116887. The next prime is 31116959. The reversal of 31116893 is 39861113.

It can be written as a sum of positive squares in 4 ways, for example, as 2809 + 31114084 = 53^2 + 5578^2 .

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 31116893 - 2⁸ = 31116637 is a prime.

It is a super-2 number, since 2×31116893² = 1936522059946898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31116853) 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, 17003 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (3969147).

Almost surely, 2^31116893 is an apocalyptic number.

It is an amenable number.

31116893 is a deficient number, since it is larger than the sum of its proper divisors (636283).

31116893 is a wasteful number, since it uses less digits than its factorization.

31116893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its digits is 3888, while the sum is 32.

The square root of 31116893 is about 5578.2517870745. The cubic root of 31116893 is about 314.5324145160.

The spelling of 31116893 in words is "thirty-one million, one hundred sixteen thousand, eight hundred ninety-three".