1311525713 has 2 divisors, whose sum is σ = 1311525714. Its totient is φ = 1311525712.

The previous prime is 1311525641. The next prime is 1311525767. The reversal of 1311525713 is 3175251131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1201107649 + 110418064 = 34657^2 + 10508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311525713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1311525793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655762856 + 655762857.

It is an arithmetic number, because the mean of its divisors is an integer number (655762857).

Almost surely, 2^1311525713 is an apocalyptic number.

It is an amenable number.

1311525713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311525713 is an equidigital number, since it uses as much as digits as its factorization.

1311525713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 29.

The square root of 1311525713 is about 36214.9929311052. The cubic root of 1311525713 is about 1094.6088030802.

Adding to 1311525713 its reverse (3175251131), we get a palindrome (4486776844).

The spelling of 1311525713 in words is "one billion, three hundred eleven million, five hundred twenty-five thousand, seven hundred thirteen".