12156263131 has 2 divisors, whose sum is σ = 12156263132. Its totient is φ = 12156263130.

The previous prime is 12156263129. The next prime is 12156263233. The reversal of 12156263131 is 13136265121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12156263131 - 2¹ = 12156263129 is a prime.

It is a super-2 number, since 2×12156263131² (a number of 21 digits) contains 22 as substring.

Together with 12156263129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12156263093 and 12156263102.

It is not a weakly prime, because it can be changed into another prime (12156263101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078131565 + 6078131566.

It is an arithmetic number, because the mean of its divisors is an integer number (6078131566).

Almost surely, 2^12156263131 is an apocalyptic number.

12156263131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12156263131 is an equidigital number, since it uses as much as digits as its factorization.

12156263131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The spelling of 12156263131 in words is "twelve billion, one hundred fifty-six million, two hundred sixty-three thousand, one hundred thirty-one".