1311563152431 has 16 divisors (see below), whose sum is σ = 2220636025600. Its totient is φ = 749464658424.

The previous prime is 1311563152411. The next prime is 1311563152477. The reversal of 1311563152431 is 1342513651131.

1311563152431 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 563 + 1 + 52 + 43 + 1 = 666.

It is not a de Polignac number, because 1311563152431 - 2⁵ = 1311563152399 is a prime.

It is a super-2 number, since 2×1311563152431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311563152411) 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, 3469743601 + ... + 3469743978.

It is an arithmetic number, because the mean of its divisors is an integer number (138789751600).

Almost surely, 2^{1311563152431} is an apocalyptic number.

1311563152431 is a deficient number, since it is larger than the sum of its proper divisors (909072873169).

1311563152431 is an equidigital number, since it uses as much as digits as its factorization.

1311563152431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939487595 (or 6939487589 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The spelling of 1311563152431 in words is "one trillion, three hundred eleven billion, five hundred sixty-three million, one hundred fifty-two thousand, four hundred thirty-one".