31860242 has 8 divisors (see below), whose sum is σ = 48503856. Its totient is φ = 15692292.

The previous prime is 31860229. The next prime is 31860251. The reversal of 31860242 is 24206813.

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

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 3 ways as a sum of consecutive naturals, for example, 118748 + ... + 119015.

It is an arithmetic number, because the mean of its divisors is an integer number (6062982).

Almost surely, 2^31860242 is an apocalyptic number.

31860242 is a deficient number, since it is larger than the sum of its proper divisors (16643614).

31860242 is a wasteful number, since it uses less digits than its factorization.

31860242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237832.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 31860242 is about 5644.4877535521. The cubic root of 31860242 is about 317.0173442331.

The spelling of 31860242 in words is "thirty-one million, eight hundred sixty thousand, two hundred forty-two".