1312251364 has 12 divisors (see below), whose sum is σ = 2309715324. Its totient is φ = 652332704.

The previous prime is 1312251319. The next prime is 1312251379. The reversal of 1312251364 is 4631522131.

It can be written as a sum of positive squares in 2 ways, for example, as 1169640000 + 142611364 = 34200^2 + 11942^2 .

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, 947467 + ... + 948850.

It is an arithmetic number, because the mean of its divisors is an integer number (192476277).

Almost surely, 2^1312251364 is an apocalyptic number.

It is an amenable number.

1312251364 is a deficient number, since it is larger than the sum of its proper divisors (997463960).

1312251364 is a wasteful number, since it uses less digits than its factorization.

1312251364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896494 (or 1896492 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 1312251364 is about 36225.0102001366. The cubic root of 1312251364 is about 1094.8106437093.

Adding to 1312251364 its reverse (4631522131), we get a palindrome (5943773495).

The spelling of 1312251364 in words is "one billion, three hundred twelve million, two hundred fifty-one thousand, three hundred sixty-four".