31994466 has 16 divisors (see below), whose sum is σ = 73130304. Its totient is φ = 9141264.

The previous prime is 31994429. The next prime is 31994483. The reversal of 31994466 is 66449913.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 761773 = 31994466 / (3 + 1 + 9 + 9 + 4 + 4 + 6 + 6).

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, 380845 + ... + 380928.

It is an arithmetic number, because the mean of its divisors is an integer number (4570644).

Almost surely, 2^31994466 is an apocalyptic number.

31994466 is an abundant number, since it is smaller than the sum of its proper divisors (41135838).

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

31994466 is a wasteful number, since it uses less digits than its factorization.

31994466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761785.

The product of its digits is 139968, while the sum is 42.

The square root of 31994466 is about 5656.3650872270. The cubic root of 31994466 is about 317.4619079272.

The spelling of 31994466 in words is "thirty-one million, nine hundred ninety-four thousand, four hundred sixty-six".