1310680865 has 8 divisors (see below), whose sum is σ = 1693803048. Its totient is φ = 967887360.

The previous prime is 1310680853. The next prime is 1310680873. The reversal of 1310680865 is 5680860131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152571904 + 1158108961 = 12352^2 + 34031^2 .

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

It is not a de Polignac number, because 1310680865 - 2²² = 1306486561 is a prime.

It is a Duffinian number.

It is a Curzon 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, 10082096 + ... + 10082225.

It is an arithmetic number, because the mean of its divisors is an integer number (211725381).

Almost surely, 2^1310680865 is an apocalyptic number.

It is an amenable number.

1310680865 is a deficient number, since it is larger than the sum of its proper divisors (383122183).

1310680865 is a wasteful number, since it uses less digits than its factorization.

1310680865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20164339.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1310680865 is about 36203.3267117816. The cubic root of 1310680865 is about 1094.3737138525.

The spelling of 1310680865 in words is "one billion, three hundred ten million, six hundred eighty thousand, eight hundred sixty-five".