1313207023181 has 2 divisors, whose sum is σ = 1313207023182. Its totient is φ = 1313207023180.

The previous prime is 1313207023123. The next prime is 1313207023237. The reversal of 1313207023181 is 1813207023131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257742063081 + 55464960100 = 1121491^2 + 235510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313207023181 - 2³⁰ = 1312133281357 is a prime.

It is a super-2 number, since 2×1313207023181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313207026181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656603511590 + 656603511591.

It is an arithmetic number, because the mean of its divisors is an integer number (656603511591).

Almost surely, 2^{1313207023181} is an apocalyptic number.

It is an amenable number.

1313207023181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313207023181 is an equidigital number, since it uses as much as digits as its factorization.

1313207023181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 1313207023181 in words is "one trillion, three hundred thirteen billion, two hundred seven million, twenty-three thousand, one hundred eighty-one".