31983412 has 12 divisors (see below), whose sum is σ = 56328580. Its totient is φ = 15889536.

The previous prime is 31983401. The next prime is 31983421. The reversal of 31983412 is 21438913.

It can be written as a sum of positive squares in 2 ways, for example, as 4901796 + 27081616 = 2214^2 + 5204^2 .

It is a congruent number.

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, 24837 + ... + 26092.

Almost surely, 2^31983412 is an apocalyptic number.

It is an amenable number.

31983412 is a deficient number, since it is larger than the sum of its proper divisors (24345168).

31983412 is a wasteful number, since it uses less digits than its factorization.

31983412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51090 (or 51088 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 31983412 is about 5655.3878735238. The cubic root of 31983412 is about 317.4253429772.

The spelling of 31983412 in words is "thirty-one million, nine hundred eighty-three thousand, four hundred twelve".