1313031013 has 4 divisors (see below), whose sum is σ = 1500606880. Its totient is φ = 1125455148.

The previous prime is 1313030993. The next prime is 1313031019. The reversal of 1313031013 is 3101303131.

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.

It is a cyclic number.

It is not a de Polignac number, because 1313031013 - 2²⁹ = 776160101 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 (1313031019) 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, 93787923 + ... + 93787936.

It is an arithmetic number, because the mean of its divisors is an integer number (375151720).

Almost surely, 2^1313031013 is an apocalyptic number.

It is an amenable number.

1313031013 is a deficient number, since it is larger than the sum of its proper divisors (187575867).

1313031013 is an equidigital number, since it uses as much as digits as its factorization.

1313031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187575866.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 1313031013 is about 36235.7698000194. The cubic root of 1313031013 is about 1095.0274210379.

Adding to 1313031013 its reverse (3101303131), we get a palindrome (4414334144).

The spelling of 1313031013 in words is "one billion, three hundred thirteen million, thirty-one thousand, thirteen".