1309862713 has 2 divisors, whose sum is σ = 1309862714. Its totient is φ = 1309862712.

The previous prime is 1309862707. The next prime is 1309862731. The reversal of 1309862713 is 3172689031.

Together with next prime (1309862731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1309860864 + 1849 = 36192^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 1309862713 - 2⁹ = 1309862201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1309862513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654931356 + 654931357.

It is an arithmetic number, because the mean of its divisors is an integer number (654931357).

Almost surely, 2^1309862713 is an apocalyptic number.

It is an amenable number.

1309862713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1309862713 is an equidigital number, since it uses as much as digits as its factorization.

1309862713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1309862713 is about 36192.0255443102. The cubic root of 1309862713 is about 1094.1459568059.

The spelling of 1309862713 in words is "one billion, three hundred nine million, eight hundred sixty-two thousand, seven hundred thirteen".