1315322245 has 4 divisors (see below), whose sum is σ = 1578386700. Its totient is φ = 1052257792.

The previous prime is 1315322221. The next prime is 1315322263. The reversal of 1315322245 is 5422235131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 199628641 + 1115693604 = 14129^2 + 33402^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315322245 - 2⁷ = 1315322117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131532220 + ... + 131532229.

It is an arithmetic number, because the mean of its divisors is an integer number (394596675).

Almost surely, 2^1315322245 is an apocalyptic number.

It is an amenable number.

1315322245 is a deficient number, since it is larger than the sum of its proper divisors (263064455).

1315322245 is an equidigital number, since it uses as much as digits as its factorization.

1315322245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263064454.

The product of its digits is 7200, while the sum is 28.

The square root of 1315322245 is about 36267.3716307096. The cubic root of 1315322245 is about 1095.6639898829.

Adding to 1315322245 its reverse (5422235131), we get a palindrome (6737557376).

The spelling of 1315322245 in words is "one billion, three hundred fifteen million, three hundred twenty-two thousand, two hundred forty-five".