31885242 has 8 divisors (see below), whose sum is σ = 63770496. Its totient is φ = 10628412.

The previous prime is 31885241. The next prime is 31885247. The reversal of 31885242 is 24258813.

It is a sphenic number, since it is the product of 3 distinct primes.

31885242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31885241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657098 + ... + 2657109.

It is an arithmetic number, because the mean of its divisors is an integer number (7971312).

Almost surely, 2^31885242 is an apocalyptic number.

31885242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31885242 is a wasteful number, since it uses less digits than its factorization.

31885242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314212.

The product of its digits is 15360, while the sum is 33.

The square root of 31885242 is about 5646.7018692330. The cubic root of 31885242 is about 317.1002412969.

The spelling of 31885242 in words is "thirty-one million, eight hundred eighty-five thousand, two hundred forty-two".