1215318713 has 8 divisors (see below), whose sum is σ = 1389364032. Its totient is φ = 1041380496.

The previous prime is 1215318701. The next prime is 1215318739. The reversal of 1215318713 is 3178135121.

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 1215318713 - 2²⁶ = 1148209849 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215318713.

It is not an unprimeable number, because it can be changed into a prime (1215317713) 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, 770 + ... + 49307.

It is an arithmetic number, because the mean of its divisors is an integer number (173670504).

Almost surely, 2^1215318713 is an apocalyptic number.

It is an amenable number.

1215318713 is a deficient number, since it is larger than the sum of its proper divisors (174045319).

1215318713 is an equidigital number, since it uses as much as digits as its factorization.

1215318713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53551.

The product of its digits is 5040, while the sum is 32.

The square root of 1215318713 is about 34861.4215573605. The cubic root of 1215318713 is about 1067.1612859172.

The spelling of 1215318713 in words is "one billion, two hundred fifteen million, three hundred eighteen thousand, seven hundred thirteen".