1313040013 has 4 divisors (see below), whose sum is σ = 1313953920. Its totient is φ = 1312126108.

The previous prime is 1313040007. The next prime is 1313040037. The reversal of 1313040013 is 3100403131.

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 1313040013 - 2⁹ = 1313039501 is a prime.

It is a super-3 number, since 3×1313040013³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313049013) 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, 454795 + ... + 457672.

It is an arithmetic number, because the mean of its divisors is an integer number (328488480).

Almost surely, 2^1313040013 is an apocalyptic number.

It is an amenable number.

1313040013 is a deficient number, since it is larger than the sum of its proper divisors (913907).

1313040013 is an equidigital number, since it uses as much as digits as its factorization.

1313040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913906.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1313040013 is about 36235.8939864880. The cubic root of 1313040013 is about 1095.0299229398.

Adding to 1313040013 its reverse (3100403131), we get a palindrome (4413443144).

The spelling of 1313040013 in words is "one billion, three hundred thirteen million, forty thousand, thirteen".