3131216256343 has 16 divisors (see below), whose sum is σ = 3785805760000. Its totient is φ = 2529864656352.

The previous prime is 3131216256293. The next prime is 3131216256347. The reversal of 3131216256343 is 3436526121313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131216256343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131216256296 and 3131216256305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131216256347) 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, 59126748 + ... + 59179681.

It is an arithmetic number, because the mean of its divisors is an integer number (236612860000).

Almost surely, 2^{3131216256343} is an apocalyptic number.

3131216256343 is a deficient number, since it is larger than the sum of its proper divisors (654589503657).

3131216256343 is a wasteful number, since it uses less digits than its factorization.

3131216256343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118306654.

The product of its digits is 233280, while the sum is 40.

The spelling of 3131216256343 in words is "three trillion, one hundred thirty-one billion, two hundred sixteen million, two hundred fifty-six thousand, three hundred forty-three".