1313125763 has 4 divisors (see below), whose sum is σ = 1326663240. Its totient is φ = 1299588288.

The previous prime is 1313125757. The next prime is 1313125783. The reversal of 1313125763 is 3675213131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3675213131 = 15791 ⋅232741.

It is a cyclic number.

It is not a de Polignac number, because 1313125763 - 2⁶ = 1313125699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313125703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768593 + ... + 6768786.

It is an arithmetic number, because the mean of its divisors is an integer number (331665810).

Almost surely, 2^1313125763 is an apocalyptic number.

1313125763 is a deficient number, since it is larger than the sum of its proper divisors (13537477).

1313125763 is an equidigital number, since it uses as much as digits as its factorization.

1313125763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537476.

The product of its digits is 11340, while the sum is 32.

The square root of 1313125763 is about 36237.0771862191. The cubic root of 1313125763 is about 1095.0537599315.

Adding to 1313125763 its reverse (3675213131), we get a palindrome (4988338894).

The spelling of 1313125763 in words is "one billion, three hundred thirteen million, one hundred twenty-five thousand, seven hundred sixty-three".