12231186397 has 2 divisors, whose sum is σ = 12231186398. Its totient is φ = 12231186396.

The previous prime is 12231186377. The next prime is 12231186437. The reversal of 12231186397 is 79368113221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8897394276 + 3333792121 = 94326^2 + 57739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231186397 - 2²³ = 12222797789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231186347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115593198 + 6115593199.

It is an arithmetic number, because the mean of its divisors is an integer number (6115593199).

Almost surely, 2^12231186397 is an apocalyptic number.

It is an amenable number.

12231186397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231186397 is an equidigital number, since it uses as much as digits as its factorization.

12231186397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The spelling of 12231186397 in words is "twelve billion, two hundred thirty-one million, one hundred eighty-six thousand, three hundred ninety-seven".