31085045 has 8 divisors (see below), whose sum is σ = 39265440. Its totient is φ = 23559120.

The previous prime is 31084981. The next prime is 31085053. The reversal of 31085045 is 54058013.

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

It is not a de Polignac number, because 31085045 - 2⁶ = 31084981 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, 163511 + ... + 163700.

It is an arithmetic number, because the mean of its divisors is an integer number (4908180).

Almost surely, 2^31085045 is an apocalyptic number.

It is an amenable number.

31085045 is a deficient number, since it is larger than the sum of its proper divisors (8180395).

31085045 is a wasteful number, since it uses less digits than its factorization.

31085045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327235.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 31085045 is about 5575.3963984635. The cubic root of 31085045 is about 314.4250703818.

The spelling of 31085045 in words is "thirty-one million, eighty-five thousand, forty-five".