3131212040331 has 16 divisors (see below), whose sum is σ = 4263872793600. Its totient is φ = 2043014963328.

The previous prime is 3131212040311. The next prime is 3131212040347. The reversal of 3131212040331 is 1330402121313.

It is not a de Polignac number, because 3131212040331 - 2¹⁸ = 3131211778187 is a prime.

It is a super-2 number, since 2×3131212040331² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3131212040311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6845235 + ... + 7288323.

It is an arithmetic number, because the mean of its divisors is an integer number (266492049600).

Almost surely, 2^{3131212040331} is an apocalyptic number.

3131212040331 is a deficient number, since it is larger than the sum of its proper divisors (1132660753269).

3131212040331 is a wasteful number, since it uses less digits than its factorization.

3131212040331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493258.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 3131212040331 its reverse (1330402121313), we get a palindrome (4461614161644).

The spelling of 3131212040331 in words is "three trillion, one hundred thirty-one billion, two hundred twelve million, forty thousand, three hundred thirty-one".