1312223231197 has 2 divisors, whose sum is σ = 1312223231198. Its totient is φ = 1312223231196.

The previous prime is 1312223231177. The next prime is 1312223231219. The reversal of 1312223231197 is 7911323222131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804661026841 + 507562204356 = 897029^2 + 712434^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312223231197 - 2³¹ = 1310075747549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312223231177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656111615598 + 656111615599.

It is an arithmetic number, because the mean of its divisors is an integer number (656111615599).

Almost surely, 2^{1312223231197} is an apocalyptic number.

It is an amenable number.

1312223231197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312223231197 is an equidigital number, since it uses as much as digits as its factorization.

1312223231197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The spelling of 1312223231197 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred ninety-seven".