12131230169 has 2 divisors, whose sum is σ = 12131230170. Its totient is φ = 12131230168.

The previous prime is 12131230127. The next prime is 12131230271. The reversal of 12131230169 is 96103213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11943211225 + 188018944 = 109285^2 + 13712^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131230169 - 2¹² = 12131226073 is a prime.

It is a super-2 number, since 2×12131230169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12131230109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065615084 + 6065615085.

It is an arithmetic number, because the mean of its divisors is an integer number (6065615085).

Almost surely, 2^12131230169 is an apocalyptic number.

It is an amenable number.

12131230169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131230169 is an equidigital number, since it uses as much as digits as its factorization.

12131230169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 12131230169 in words is "twelve billion, one hundred thirty-one million, two hundred thirty thousand, one hundred sixty-nine".