3131212344 has 32 divisors (see below), whose sum is σ = 8430187920. Its totient is φ = 963449856.

The previous prime is 3131212291. The next prime is 3131212361. The reversal of 3131212344 is 4432121313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 5017657 + ... + 5018280.

Almost surely, 2^3131212344 is an apocalyptic number.

It is an amenable number.

3131212344 is an abundant number, since it is smaller than the sum of its proper divisors (5298975576).

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

3131212344 is a wasteful number, since it uses less digits than its factorization.

3131212344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035959 (or 10035955 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 3131212344 is about 55957.2367437850. The cubic root of 3131212344 is about 1462.9770280551.

Adding to 3131212344 its reverse (4432121313), we get a palindrome (7563333657).

The spelling of 3131212344 in words is "three billion, one hundred thirty-one million, two hundred twelve thousand, three hundred forty-four".