1313144243197 has 2 divisors, whose sum is σ = 1313144243198. Its totient is φ = 1313144243196.

The previous prime is 1313144243189. The next prime is 1313144243209. The reversal of 1313144243197 is 7913424413131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253535508996 + 59608734201 = 1119614^2 + 244149^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313144243197 - 2³ = 1313144243189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313144243107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656572121598 + 656572121599.

It is an arithmetic number, because the mean of its divisors is an integer number (656572121599).

Almost surely, 2^{1313144243197} is an apocalyptic number.

It is an amenable number.

1313144243197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313144243197 is an equidigital number, since it uses as much as digits as its factorization.

1313144243197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The spelling of 1313144243197 in words is "one trillion, three hundred thirteen billion, one hundred forty-four million, two hundred forty-three thousand, one hundred ninety-seven".