31166045 has 8 divisors (see below), whose sum is σ = 37439160. Its totient is φ = 24906240.

The previous prime is 31166021. The next prime is 31166111. The reversal of 31166045 is 54066113.

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 31125241 = 202^2 + 5579^2 .

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

It is not a de Polignac number, because 31166045 - 2⁸ = 31165789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2885 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (4679895).

Almost surely, 2^31166045 is an apocalyptic number.

It is an amenable number.

31166045 is a deficient number, since it is larger than the sum of its proper divisors (6273115).

31166045 is a wasteful number, since it uses less digits than its factorization.

31166045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31166045 is about 5582.6557300267. The cubic root of 31166045 is about 314.6979383710.

The spelling of 31166045 in words is "thirty-one million, one hundred sixty-six thousand, forty-five".