31074990 has 32 divisors (see below), whose sum is σ = 76170240. Its totient is φ = 8109984.

The previous prime is 31074971. The next prime is 31075021. The reversal of 31074990 is 9947013.

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 15 ways as a sum of consecutive naturals, for example, 9610 + ... + 12429.

It is an arithmetic number, because the mean of its divisors is an integer number (2380320).

Almost surely, 2^31074990 is an apocalyptic number.

31074990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31074990 is an abundant number, since it is smaller than the sum of its proper divisors (45095250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31074990 is a wasteful number, since it uses less digits than its factorization.

31074990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22096.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 31074990 is about 5574.4945959253. The cubic root of 31074990 is about 314.3911646346.

The spelling of 31074990 in words is "thirty-one million, seventy-four thousand, nine hundred ninety".