1311573701 has 2 divisors, whose sum is σ = 1311573702. Its totient is φ = 1311573700.

The previous prime is 1311573673. The next prime is 1311573707. The reversal of 1311573701 is 1073751131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893412100 + 418161601 = 29890^2 + 20449^2 .

It is an emirp because it is prime and its reverse (1073751131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311573701 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311573707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655786850 + 655786851.

It is an arithmetic number, because the mean of its divisors is an integer number (655786851).

Almost surely, 2^1311573701 is an apocalyptic number.

It is an amenable number.

1311573701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311573701 is an equidigital number, since it uses as much as digits as its factorization.

1311573701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 29.

The square root of 1311573701 is about 36215.6554683192. The cubic root of 1311573701 is about 1094.6221532942.

The spelling of 1311573701 in words is "one billion, three hundred eleven million, five hundred seventy-three thousand, seven hundred one".