1310000729 has 2 divisors, whose sum is σ = 1310000730. Its totient is φ = 1310000728.

The previous prime is 1310000723. The next prime is 1310000743. The reversal of 1310000729 is 9270000131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964226704 + 345774025 = 31052^2 + 18595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310000729 - 2⁸ = 1310000473 is a prime.

It is a super-2 number, since 2×1310000729² = 3432203819961062882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310000723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655000364 + 655000365.

It is an arithmetic number, because the mean of its divisors is an integer number (655000365).

Almost surely, 2^1310000729 is an apocalyptic number.

It is an amenable number.

1310000729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310000729 is an equidigital number, since it uses as much as digits as its factorization.

1310000729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1310000729 is about 36193.9322124579. The cubic root of 1310000729 is about 1094.1843843305.

The spelling of 1310000729 in words is "one billion, three hundred ten million, seven hundred twenty-nine", and thus it is an aban number.