1312224317 has 2 divisors, whose sum is σ = 1312224318. Its totient is φ = 1312224316.

The previous prime is 1312224301. The next prime is 1312224337. The reversal of 1312224317 is 7134222131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1234889881 + 77334436 = 35141^2 + 8794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312224317 - 2⁴ = 1312224301 is a prime.

It is a super-2 number, since 2×1312224317² = 3443865316252232978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312224337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656112158 + 656112159.

It is an arithmetic number, because the mean of its divisors is an integer number (656112159).

Almost surely, 2^1312224317 is an apocalyptic number.

It is an amenable number.

1312224317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312224317 is an equidigital number, since it uses as much as digits as its factorization.

1312224317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 1312224317 is about 36224.6368787873. The cubic root of 1312224317 is about 1094.8031218915.

Adding to 1312224317 its reverse (7134222131), we get a palindrome (8446446448).

The spelling of 1312224317 in words is "one billion, three hundred twelve million, two hundred twenty-four thousand, three hundred seventeen".