31990476 has 24 divisors (see below), whose sum is σ = 85308160. Its totient is φ = 9140112.

The previous prime is 31990421. The next prime is 31990487. The reversal of 31990476 is 67409913.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190336 + ... + 190503.

Almost surely, 2^31990476 is an apocalyptic number.

It is an amenable number.

31990476 is an abundant number, since it is smaller than the sum of its proper divisors (53317684).

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

31990476 is a wasteful number, since it uses less digits than its factorization.

31990476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380853 (or 380851 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 31990476 is about 5656.0123762241. The cubic root of 31990476 is about 317.4487105859.

The spelling of 31990476 in words is "thirty-one million, nine hundred ninety thousand, four hundred seventy-six".