3131531412 has 12 divisors (see below), whose sum is σ = 7306906656. Its totient is φ = 1043843800.

The previous prime is 3131531407. The next prime is 3131531449. The reversal of 3131531412 is 2141351313.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130480464 + ... + 130480487.

It is an arithmetic number, because the mean of its divisors is an integer number (608908888).

Almost surely, 2^3131531412 is an apocalyptic number.

It is an amenable number.

3131531412 is an abundant number, since it is smaller than the sum of its proper divisors (4175375244).

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

3131531412 is a wasteful number, since it uses less digits than its factorization.

3131531412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260960958 (or 260960956 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 3131531412 is about 55960.0876696954. The cubic root of 3131531412 is about 1463.0267184252.

Adding to 3131531412 its reverse (2141351313), we get a palindrome (5272882725).

The spelling of 3131531412 in words is "three billion, one hundred thirty-one million, five hundred thirty-one thousand, four hundred twelve".