1312310610565 has 16 divisors (see below), whose sum is σ = 1585271456496. Its totient is φ = 1042862515200.

The previous prime is 1312310610529. The next prime is 1312310610581. The reversal of 1312310610565 is 5650160132131.

It can be written as a sum of positive squares in 8 ways, for example, as 317805042564 + 994505568001 = 563742^2 + 997249^2 .

It is not a de Polignac number, because 1312310610565 - 2⁷ = 1312310610437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312310610565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25662 + ... + 1620271.

It is an arithmetic number, because the mean of its divisors is an integer number (99079466031).

Almost surely, 2^{1312310610565} is an apocalyptic number.

It is an amenable number.

1312310610565 is a deficient number, since it is larger than the sum of its proper divisors (272960845931).

1312310610565 is a wasteful number, since it uses less digits than its factorization.

1312310610565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647000.

The product of its (nonzero) digits is 16200, while the sum is 34.

Adding to 1312310610565 its reverse (5650160132131), we get a palindrome (6962470742696).

The spelling of 1312310610565 in words is "one trillion, three hundred twelve billion, three hundred ten million, six hundred ten thousand, five hundred sixty-five".