1312288763 has 4 divisors (see below), whose sum is σ = 1344295848. Its totient is φ = 1280281680.

The previous prime is 1312288727. The next prime is 1312288781. The reversal of 1312288763 is 3678822131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312288763 - 2¹⁸ = 1312026619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 32007043 = 1312288763 / (1 + 3 + 1 + 2 + 2 + 8 + 8 + 7 + 6 + 3).

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 1312288763.

It is not an unprimeable number, because it can be changed into a prime (1312288163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16003481 + ... + 16003562.

It is an arithmetic number, because the mean of its divisors is an integer number (336073962).

Almost surely, 2^1312288763 is an apocalyptic number.

1312288763 is a deficient number, since it is larger than the sum of its proper divisors (32007085).

1312288763 is an equidigital number, since it uses as much as digits as its factorization.

1312288763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32007084.

The product of its digits is 96768, while the sum is 41.

The square root of 1312288763 is about 36225.5264005922. The cubic root of 1312288763 is about 1094.8210442660.

The spelling of 1312288763 in words is "one billion, three hundred twelve million, two hundred eighty-eight thousand, seven hundred sixty-three".