31890466 has 16 divisors (see below), whose sum is σ = 50035968. Its totient is φ = 15215200.

The previous prime is 31890407. The next prime is 31890473. The reversal of 31890466 is 66409813.

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, 34551 + ... + 35461.

It is an arithmetic number, because the mean of its divisors is an integer number (3127248).

Almost surely, 2^31890466 is an apocalyptic number.

31890466 is a deficient number, since it is larger than the sum of its proper divisors (18145502).

31890466 is a wasteful number, since it uses less digits than its factorization.

31890466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 31890466 is about 5647.1644211941. The cubic root of 31890466 is about 317.1175579936.

The spelling of 31890466 in words is "thirty-one million, eight hundred ninety thousand, four hundred sixty-six".