1222315313 has 4 divisors (see below), whose sum is σ = 1255350900. Its totient is φ = 1189279728.

The previous prime is 1222315307. The next prime is 1222315319. The reversal of 1222315313 is 3135132221.

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

It is an interprime number because it is at equal distance from previous prime (1222315307) and next prime (1222315319).

It can be written as a sum of positive squares in 2 ways, for example, as 1064260129 + 158055184 = 32623^2 + 12572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222315313 - 2⁸ = 1222315057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222315319) 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, 16517738 + ... + 16517811.

It is an arithmetic number, because the mean of its divisors is an integer number (313837725).

Almost surely, 2^1222315313 is an apocalyptic number.

It is an amenable number.

1222315313 is a deficient number, since it is larger than the sum of its proper divisors (33035587).

1222315313 is an equidigital number, since it uses as much as digits as its factorization.

1222315313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33035586.

The product of its digits is 1080, while the sum is 23.

The square root of 1222315313 is about 34961.6262922651. The cubic root of 1222315313 is about 1069.2052540245.

Adding to 1222315313 its reverse (3135132221), we get a palindrome (4357447534).

The spelling of 1222315313 in words is "one billion, two hundred twenty-two million, three hundred fifteen thousand, three hundred thirteen".