31975085 has 8 divisors (see below), whose sum is σ = 38750616. Its totient is φ = 25326400.

The previous prime is 31975061. The next prime is 31975117. The reversal of 31975085 is 58057913.

It can be written as a sum of positive squares in 4 ways, for example, as 3736489 + 28238596 = 1933^2 + 5314^2 .

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

It is not a de Polignac number, because 31975085 - 2⁸ = 31974829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31154 + ... + 32163.

It is an arithmetic number, because the mean of its divisors is an integer number (4843827).

Almost surely, 2^31975085 is an apocalyptic number.

It is an amenable number.

31975085 is a deficient number, since it is larger than the sum of its proper divisors (6775531).

31975085 is a wasteful number, since it uses less digits than its factorization.

31975085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63423.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 31975085 is about 5654.6516249898. The cubic root of 31975085 is about 317.3977929642.

The spelling of 31975085 in words is "thirty-one million, nine hundred seventy-five thousand, eighty-five".