1313340653 has 4 divisors (see below), whose sum is σ = 1313419680. Its totient is φ = 1313261628.

The previous prime is 1313340643. The next prime is 1313340671. The reversal of 1313340653 is 3560433131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313340653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313340643) 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, 3863 + ... + 51396.

It is an arithmetic number, because the mean of its divisors is an integer number (328354920).

Almost surely, 2^1313340653 is an apocalyptic number.

It is an amenable number.

1313340653 is a deficient number, since it is larger than the sum of its proper divisors (79027).

1313340653 is an equidigital number, since it uses as much as digits as its factorization.

1313340653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79026.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 1313340653 is about 36240.0421219402. The cubic root of 1313340653 is about 1095.1134910134.

Adding to 1313340653 its reverse (3560433131), we get a palindrome (4873773784).

The spelling of 1313340653 in words is "one billion, three hundred thirteen million, three hundred forty thousand, six hundred fifty-three".