31244412 has 12 divisors (see below), whose sum is σ = 72903656. Its totient is φ = 10414800.

The previous prime is 31244399. The next prime is 31244431. The reversal of 31244412 is 21444213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 1301839 + ... + 1301862.

Almost surely, 2^31244412 is an apocalyptic number.

It is an amenable number.

31244412 is an abundant number, since it is smaller than the sum of its proper divisors (41659244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31244412 is a wasteful number, since it uses less digits than its factorization.

31244412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603708 (or 2603706 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 31244412 is about 5589.6701154898. The cubic root of 31244412 is about 314.9614868510.

Adding to 31244412 its reverse (21444213), we get a palindrome (52688625).

The spelling of 31244412 in words is "thirty-one million, two hundred forty-four thousand, four hundred twelve".