1311013139 has 2 divisors, whose sum is σ = 1311013140. Its totient is φ = 1311013138.

The previous prime is 1311013127. The next prime is 1311013147. The reversal of 1311013139 is 9313101131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311013139 - 2⁸ = 1311012883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1311013199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655506569 + 655506570.

It is an arithmetic number, because the mean of its divisors is an integer number (655506570).

Almost surely, 2^1311013139 is an apocalyptic number.

1311013139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311013139 is an equidigital number, since it uses as much as digits as its factorization.

1311013139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1311013139 is about 36207.9154191456. The cubic root of 1311013139 is about 1094.4661851822.

The spelling of 1311013139 in words is "one billion, three hundred eleven million, thirteen thousand, one hundred thirty-nine".