1313809717 has 8 divisors (see below), whose sum is σ = 1447438752. Its totient is φ = 1182546000.

The previous prime is 1313809709. The next prime is 1313809747. The reversal of 1313809717 is 7179083131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313809717 - 2³ = 1313809709 is a prime.

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 1313809717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313809747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590163 + ... + 592384.

It is an arithmetic number, because the mean of its divisors is an integer number (180929844).

Almost surely, 2^1313809717 is an apocalyptic number.

It is an amenable number.

1313809717 is a deficient number, since it is larger than the sum of its proper divisors (133629035).

1313809717 is a wasteful number, since it uses less digits than its factorization.

1313809717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182659.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 1313809717 is about 36246.5131702347. The cubic root of 1313809717 is about 1095.2438499754.

The spelling of 1313809717 in words is "one billion, three hundred thirteen million, eight hundred nine thousand, seven hundred seventeen".