3131444651287 has 2 divisors, whose sum is σ = 3131444651288. Its totient is φ = 3131444651286.

The previous prime is 3131444651273. The next prime is 3131444651323. The reversal of 3131444651287 is 7821564441313.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131444651287 is a prime.

It is a super-2 number, since 2×3131444651287² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3131444651287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131444651267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565722325643 + 1565722325644.

It is an arithmetic number, because the mean of its divisors is an integer number (1565722325644).

Almost surely, 2^{3131444651287} is an apocalyptic number.

3131444651287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131444651287 is an equidigital number, since it uses as much as digits as its factorization.

3131444651287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The spelling of 3131444651287 in words is "three trillion, one hundred thirty-one billion, four hundred forty-four million, six hundred fifty-one thousand, two hundred eighty-seven".