1310720839 has 2 divisors, whose sum is σ = 1310720840. Its totient is φ = 1310720838.

The previous prime is 1310720809. The next prime is 1310720867. The reversal of 1310720839 is 9380270131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310720839 - 2¹³ = 1310712647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310720809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655360419 + 655360420.

It is an arithmetic number, because the mean of its divisors is an integer number (655360420).

Almost surely, 2^1310720839 is an apocalyptic number.

1310720839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310720839 is an equidigital number, since it uses as much as digits as its factorization.

1310720839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1310720839 is about 36203.8787839093. The cubic root of 1310720839 is about 1094.3848393805.

The spelling of 1310720839 in words is "one billion, three hundred ten million, seven hundred twenty thousand, eight hundred thirty-nine".