31916994 has 32 divisors (see below), whose sum is σ = 67176000. Its totient is φ = 10094784.

The previous prime is 31916993. The next prime is 31916999. The reversal of 31916994 is 49961913.

It is not an unprimeable number, because it can be changed into a prime (31916993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8712 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (2099250).

Almost surely, 2^31916994 is an apocalyptic number.

31916994 is an abundant number, since it is smaller than the sum of its proper divisors (35259006).

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

31916994 is a wasteful number, since it uses less digits than its factorization.

31916994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202.

The product of its digits is 52488, while the sum is 42.

The square root of 31916994 is about 5649.5127223505. The cubic root of 31916994 is about 317.2054647578.

The spelling of 31916994 in words is "thirty-one million, nine hundred sixteen thousand, nine hundred ninety-four".