31241992 has 16 divisors (see below), whose sum is σ = 58652460. Its totient is φ = 15601344.

The previous prime is 31241983. The next prime is 31241993. The reversal of 31241992 is 29914213.

It can be written as a sum of positive squares in 2 ways, for example, as 27185796 + 4056196 = 5214^2 + 2014^2 .

It is not an unprimeable number, because it can be changed into a prime (31241993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6018 + ... + 9934.

Almost surely, 2^31241992 is an apocalyptic number.

It is an amenable number.

31241992 is a deficient number, since it is larger than the sum of its proper divisors (27410468).

31241992 is a wasteful number, since it uses less digits than its factorization.

31241992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920 (or 4916 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 31241992 is about 5589.4536405627. The cubic root of 31241992 is about 314.9533549811.

The spelling of 31241992 in words is "thirty-one million, two hundred forty-one thousand, nine hundred ninety-two".