3131145212 has 12 divisors (see below), whose sum is σ = 5901004536. Its totient is φ = 1445143920.

The previous prime is 3131145191. The next prime is 3131145229. The reversal of 3131145212 is 2125411313.

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, 30107114 + ... + 30107217.

It is an arithmetic number, because the mean of its divisors is an integer number (491750378).

Almost surely, 2^3131145212 is an apocalyptic number.

It is an amenable number.

3131145212 is a deficient number, since it is larger than the sum of its proper divisors (2769859324).

3131145212 is a wasteful number, since it uses less digits than its factorization.

3131145212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60214348 (or 60214346 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 3131145212 is about 55956.6368896488. The cubic root of 3131145212 is about 1462.9665727570.

Adding to 3131145212 its reverse (2125411313), we get a palindrome (5256556525).

The spelling of 3131145212 in words is "three billion, one hundred thirty-one million, one hundred forty-five thousand, two hundred twelve".