1317245207 has 4 divisors (see below), whose sum is σ = 1321536216. Its totient is φ = 1312954200.

The previous prime is 1317245197. The next prime is 1317245233. The reversal of 1317245207 is 7025427131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1317245207 - 2¹⁶ = 1317179671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317245257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145044 + ... + 2145657.

It is an arithmetic number, because the mean of its divisors is an integer number (330384054).

Almost surely, 2^1317245207 is an apocalyptic number.

1317245207 is a deficient number, since it is larger than the sum of its proper divisors (4291009).

1317245207 is an equidigital number, since it uses as much as digits as its factorization.

1317245207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291008.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1317245207 is about 36293.8728575499. The cubic root of 1317245207 is about 1096.1976726127.

The spelling of 1317245207 in words is "one billion, three hundred seventeen million, two hundred forty-five thousand, two hundred seven".