12616131431 has 2 divisors, whose sum is σ = 12616131432. Its totient is φ = 12616131430.

The previous prime is 12616131421. The next prime is 12616131449. The reversal of 12616131431 is 13413161621.

It is a weak prime.

It is an emirp because it is prime and its reverse (13413161621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12616131431 - 2²² = 12611937127 is a prime.

It is a super-2 number, since 2×12616131431² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12616131394 and 12616131403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12616131401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308065715 + 6308065716.

It is an arithmetic number, because the mean of its divisors is an integer number (6308065716).

Almost surely, 2^12616131431 is an apocalyptic number.

12616131431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12616131431 is an equidigital number, since it uses as much as digits as its factorization.

12616131431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The spelling of 12616131431 in words is "twelve billion, six hundred sixteen million, one hundred thirty-one thousand, four hundred thirty-one".