1313320985 has 8 divisors (see below), whose sum is σ = 1582929216. Its totient is φ = 1046027440.

The previous prime is 1313320969. The next prime is 1313320991. The reversal of 1313320985 is 5890233131.

It is a happy number.

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

It is not a de Polignac number, because 1313320985 - 2⁴ = 1313320969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577421 + ... + 579690.

It is an arithmetic number, because the mean of its divisors is an integer number (197866152).

Almost surely, 2^1313320985 is an apocalyptic number.

It is an amenable number.

1313320985 is a deficient number, since it is larger than the sum of its proper divisors (269608231).

1313320985 is a wasteful number, since it uses less digits than its factorization.

1313320985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157343.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1313320985 is about 36239.7707636238. The cubic root of 1313320985 is about 1095.1080243435.

The spelling of 1313320985 in words is "one billion, three hundred thirteen million, three hundred twenty thousand, nine hundred eighty-five".