1313312437 has 2 divisors, whose sum is σ = 1313312438. Its totient is φ = 1313312436.

The previous prime is 1313312431. The next prime is 1313312453. The reversal of 1313312437 is 7342133131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258759441 + 54552996 = 35479^2 + 7386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313312437 - 2¹¹ = 1313310389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313312431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656656218 + 656656219.

It is an arithmetic number, because the mean of its divisors is an integer number (656656219).

Almost surely, 2^1313312437 is an apocalyptic number.

It is an amenable number.

1313312437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313312437 is an equidigital number, since it uses as much as digits as its factorization.

1313312437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 1313312437 is about 36239.6528267035. The cubic root of 1313312437 is about 1095.1056484318.

Adding to 1313312437 its reverse (7342133131), we get a palindrome (8655445568).

The spelling of 1313312437 in words is "one billion, three hundred thirteen million, three hundred twelve thousand, four hundred thirty-seven".