1313021572193 has 2 divisors, whose sum is σ = 1313021572194. Its totient is φ = 1313021572192.

The previous prime is 1313021572171. The next prime is 1313021572201. The reversal of 1313021572193 is 3912751203131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 732037670464 + 580983901729 = 855592^2 + 762223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313021572193 - 2¹² = 1313021568097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313021572153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656510786096 + 656510786097.

It is an arithmetic number, because the mean of its divisors is an integer number (656510786097).

Almost surely, 2^{1313021572193} is an apocalyptic number.

It is an amenable number.

1313021572193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313021572193 is an equidigital number, since it uses as much as digits as its factorization.

1313021572193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The spelling of 1313021572193 in words is "one trillion, three hundred thirteen billion, twenty-one million, five hundred seventy-two thousand, one hundred ninety-three".