31304842 has 8 divisors (see below), whose sum is σ = 47373156. Its totient is φ = 15513792.

The previous prime is 31304839. The next prime is 31304851. The reversal of 31304842 is 24840313.

It can be written as a sum of positive squares in 2 ways, for example, as 26101881 + 5202961 = 5109^2 + 2281^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69033 + ... + 69484.

Almost surely, 2^31304842 is an apocalyptic number.

31304842 is a deficient number, since it is larger than the sum of its proper divisors (16068314).

31304842 is a wasteful number, since it uses less digits than its factorization.

31304842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138632.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 31304842 is about 5595.0730111411. The cubic root of 31304842 is about 315.1644123654.

The spelling of 31304842 in words is "thirty-one million, three hundred four thousand, eight hundred forty-two".