12155763131 has 2 divisors, whose sum is σ = 12155763132. Its totient is φ = 12155763130.

The previous prime is 12155763127. The next prime is 12155763161. The reversal of 12155763131 is 13136755121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12155763131 - 2² = 12155763127 is a prime.

It is a super-2 number, since 2×12155763131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12155763091 and 12155763100.

It is not a weakly prime, because it can be changed into another prime (12155763161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077881565 + 6077881566.

It is an arithmetic number, because the mean of its divisors is an integer number (6077881566).

Almost surely, 2^12155763131 is an apocalyptic number.

12155763131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12155763131 is an equidigital number, since it uses as much as digits as its factorization.

12155763131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The spelling of 12155763131 in words is "twelve billion, one hundred fifty-five million, seven hundred sixty-three thousand, one hundred thirty-one".