1313250681 has 8 divisors (see below), whose sum is σ = 1756632384. Its totient is φ = 872684720.

The previous prime is 1313250671. The next prime is 1313250691. The reversal of 1313250681 is 1860523131.

It is an interprime number because it is at equal distance from previous prime (1313250671) and next prime (1313250691).

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 1313250681 - 2²³ = 1304862073 is a prime.

It is a super-2 number, since 2×1313250681² = 3449254702293927522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1313250671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702846 + ... + 704711.

It is an arithmetic number, because the mean of its divisors is an integer number (219579048).

Almost surely, 2^1313250681 is an apocalyptic number.

It is an amenable number.

1313250681 is a deficient number, since it is larger than the sum of its proper divisors (443381703).

1313250681 is a wasteful number, since it uses less digits than its factorization.

1313250681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407871.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1313250681 is about 36238.8007665817. The cubic root of 1313250681 is about 1095.0884830814.

The spelling of 1313250681 in words is "one billion, three hundred thirteen million, two hundred fifty thousand, six hundred eighty-one".