1310322605 has 4 divisors (see below), whose sum is σ = 1572387132. Its totient is φ = 1048258080.

The previous prime is 1310322599. The next prime is 1310322613. The reversal of 1310322605 is 5062230131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 452242756 + 858079849 = 21266^2 + 29293^2 .

It is not a de Polignac number, because 1310322605 - 2³⁰ = 236580781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 131032256 + ... + 131032265.

It is an arithmetic number, because the mean of its divisors is an integer number (393096783).

Almost surely, 2^1310322605 is an apocalyptic number.

It is an amenable number.

1310322605 is a deficient number, since it is larger than the sum of its proper divisors (262064527).

1310322605 is an equidigital number, since it uses as much as digits as its factorization.

1310322605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262064526.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1310322605 is about 36198.3784857830. The cubic root of 1310322605 is about 1094.2739931487.

Adding to 1310322605 its reverse (5062230131), we get a palindrome (6372552736).

The spelling of 1310322605 in words is "one billion, three hundred ten million, three hundred twenty-two thousand, six hundred five".