31272894 has 24 divisors (see below), whose sum is σ = 71744400. Its totient is φ = 9811008.

The previous prime is 31272889. The next prime is 31272937. The reversal of 31272894 is 49827213.

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 11 ways as a sum of consecutive naturals, for example, 50794 + ... + 51405.

It is an arithmetic number, because the mean of its divisors is an integer number (2989350).

Almost surely, 2^31272894 is an apocalyptic number.

31272894 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31272894 is an abundant number, since it is smaller than the sum of its proper divisors (40471506).

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

31272894 is a wasteful number, since it uses less digits than its factorization.

31272894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102224 (or 102221 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 31272894 is about 5592.2172704572. The cubic root of 31272894 is about 315.0571627176.

The spelling of 31272894 in words is "thirty-one million, two hundred seventy-two thousand, eight hundred ninety-four".