1311626339 has 2 divisors, whose sum is σ = 1311626340. Its totient is φ = 1311626338.

The previous prime is 1311626311. The next prime is 1311626383. The reversal of 1311626339 is 9336261131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311626339 - 2¹² = 1311622243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311626299 and 1311626308.

It is not a weakly prime, because it can be changed into another prime (1311626389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655813169 + 655813170.

It is an arithmetic number, because the mean of its divisors is an integer number (655813170).

Almost surely, 2^1311626339 is an apocalyptic number.

1311626339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311626339 is an equidigital number, since it uses as much as digits as its factorization.

1311626339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 35.

The square root of 1311626339 is about 36216.3821909367. The cubic root of 1311626339 is about 1094.6367967590.

The spelling of 1311626339 in words is "one billion, three hundred eleven million, six hundred twenty-six thousand, three hundred thirty-nine".