1313187611 has 2 divisors, whose sum is σ = 1313187612. Its totient is φ = 1313187610.

The previous prime is 1313187587. The next prime is 1313187653. The reversal of 1313187611 is 1167813131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313187611 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313187011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656593805 + 656593806.

It is an arithmetic number, because the mean of its divisors is an integer number (656593806).

Almost surely, 2^1313187611 is an apocalyptic number.

1313187611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313187611 is an equidigital number, since it uses as much as digits as its factorization.

1313187611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 1313187611 is about 36237.9305562556. The cubic root of 1313187611 is about 1095.0709519436.

The spelling of 1313187611 in words is "one billion, three hundred thirteen million, one hundred eighty-seven thousand, six hundred eleven".