1316220244 has 12 divisors (see below), whose sum is σ = 2304234324. Its totient is φ = 657867584.

The previous prime is 1316220233. The next prime is 1316220281. The reversal of 1316220244 is 4420226131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161036100 + 1155184144 = 12690^2 + 33988^2 .

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, 48139 + ... + 70354.

It is an arithmetic number, because the mean of its divisors is an integer number (192019527).

Almost surely, 2^1316220244 is an apocalyptic number.

It is an amenable number.

1316220244 is a deficient number, since it is larger than the sum of its proper divisors (988014080).

1316220244 is a wasteful number, since it uses less digits than its factorization.

1316220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121274 (or 121272 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1316220244 is about 36279.7497786300. The cubic root of 1316220244 is about 1095.9132776765.

Adding to 1316220244 its reverse (4420226131), we get a palindrome (5736446375).

The spelling of 1316220244 in words is "one billion, three hundred sixteen million, two hundred twenty thousand, two hundred forty-four".