1312041139 has 2 divisors, whose sum is σ = 1312041140. Its totient is φ = 1312041138.

The previous prime is 1312041121. The next prime is 1312041151. The reversal of 1312041139 is 9311402131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312041139 is a prime.

It is a super-3 number, since 3×1312041139³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1312041439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656020569 + 656020570.

It is an arithmetic number, because the mean of its divisors is an integer number (656020570).

Almost surely, 2^1312041139 is an apocalyptic number.

1312041139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312041139 is an equidigital number, since it uses as much as digits as its factorization.

1312041139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1312041139 is about 36222.1084284170. The cubic root of 1312041139 is about 1094.7521770502.

The spelling of 1312041139 in words is "one billion, three hundred twelve million, forty-one thousand, one hundred thirty-nine".