3131131412 has 6 divisors (see below), whose sum is σ = 5479479978. Its totient is φ = 1565565704.

The previous prime is 3131131379. The next prime is 3131131459. The reversal of 3131131412 is 2141311313.

It can be written as a sum of positive squares in only one way, i.e., 3104049796 + 27081616 = 55714^2 + 5204^2 .

It is a super-2 number, since 2×3131131412² = 19607967838426227488, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 391391423 + ... + 391391430.

It is an arithmetic number, because the mean of its divisors is an integer number (913246663).

Almost surely, 2^3131131412 is an apocalyptic number.

It is an amenable number.

3131131412 is a deficient number, since it is larger than the sum of its proper divisors (2348348566).

3131131412 is a wasteful number, since it uses less digits than its factorization.

3131131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782782857 (or 782782855 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 3131131412 is about 55956.5135797433. The cubic root of 3131131412 is about 1462.9644234935.

Adding to 3131131412 its reverse (2141311313), we get a palindrome (5272442725).

The spelling of 3131131412 in words is "three billion, one hundred thirty-one million, one hundred thirty-one thousand, four hundred twelve".