1313323681 has 8 divisors (see below), whose sum is σ = 1382832000. Its totient is φ = 1243854000.

The previous prime is 1313323663. The next prime is 1313323721. The reversal of 1313323681 is 1863233131.

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

It is not a de Polignac number, because 1313323681 - 2⁷ = 1313323553 is a prime.

It is a super-2 number, since 2×1313323681² = 3449638182150779522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313323631) 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, 82995 + ... + 97543.

It is an arithmetic number, because the mean of its divisors is an integer number (172854000).

Almost surely, 2^1313323681 is an apocalyptic number.

It is an amenable number.

1313323681 is a deficient number, since it is larger than the sum of its proper divisors (69508319).

1313323681 is a wasteful number, since it uses less digits than its factorization.

1313323681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19319.

The product of its digits is 7776, while the sum is 31.

The square root of 1313323681 is about 36239.8079603080. The cubic root of 1313323681 is about 1095.1087736929.

The spelling of 1313323681 in words is "one billion, three hundred thirteen million, three hundred twenty-three thousand, six hundred eighty-one".