1310729647 has 2 divisors, whose sum is σ = 1310729648. Its totient is φ = 1310729646.

The previous prime is 1310729633. The next prime is 1310729659. The reversal of 1310729647 is 7469270131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310729647 - 2¹⁵ = 1310696879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310729047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655364823 + 655364824.

It is an arithmetic number, because the mean of its divisors is an integer number (655364824).

Almost surely, 2^1310729647 is an apocalyptic number.

1310729647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310729647 is an equidigital number, since it uses as much as digits as its factorization.

1310729647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1310729647 is about 36204.0004281295. Note that the first 3 decimals coincide. The cubic root of 1310729647 is about 1094.3872907848.

Adding to 1310729647 its reverse (7469270131), we get a palindrome (8779999778).

The spelling of 1310729647 in words is "one billion, three hundred ten million, seven hundred twenty-nine thousand, six hundred forty-seven".