1339731313 has 2 divisors, whose sum is σ = 1339731314. Its totient is φ = 1339731312.

The previous prime is 1339731251. The next prime is 1339731331. The reversal of 1339731313 is 3131379331.

Together with next prime (1339731331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1319723584 + 20007729 = 36328^2 + 4473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1339731313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1339731013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669865656 + 669865657.

It is an arithmetic number, because the mean of its divisors is an integer number (669865657).

Almost surely, 2^1339731313 is an apocalyptic number.

It is an amenable number.

1339731313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339731313 is an equidigital number, since it uses as much as digits as its factorization.

1339731313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 34.

The square root of 1339731313 is about 36602.3402667097. The cubic root of 1339731313 is about 1102.4000798649.

The spelling of 1339731313 in words is "one billion, three hundred thirty-nine million, seven hundred thirty-one thousand, three hundred thirteen".