1312665601 has 8 divisors (see below), whose sum is σ = 1446515840. Its totient is φ = 1183511952.

The previous prime is 1312665593. The next prime is 1312665611. The reversal of 1312665601 is 1065662131.

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 1312665601 - 2³ = 1312665593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312665611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173561 + ... + 1174678.

It is an arithmetic number, because the mean of its divisors is an integer number (180814480).

Almost surely, 2^1312665601 is an apocalyptic number.

It is an amenable number.

1312665601 is a deficient number, since it is larger than the sum of its proper divisors (133850239).

1312665601 is a wasteful number, since it uses less digits than its factorization.

1312665601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348295.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1312665601 is about 36230.7273043200. The cubic root of 1312665601 is about 1094.9258308291.

The spelling of 1312665601 in words is "one billion, three hundred twelve million, six hundred sixty-five thousand, six hundred one".