31830974 has 16 divisors (see below), whose sum is σ = 54640608. Its totient is φ = 13623552.

The previous prime is 31830973. The next prime is 31830983. The reversal of 31830974 is 47903813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31830971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17282 + ... + 19034.

It is an arithmetic number, because the mean of its divisors is an integer number (3415038).

Almost surely, 2^31830974 is an apocalyptic number.

31830974 is a deficient number, since it is larger than the sum of its proper divisors (22809634).

31830974 is a wasteful number, since it uses less digits than its factorization.

31830974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 31830974 is about 5641.8945399573. The cubic root of 31830974 is about 316.9202398622.

The spelling of 31830974 in words is "thirty-one million, eight hundred thirty thousand, nine hundred seventy-four".