1312544513237 has 2 divisors, whose sum is σ = 1312544513238. Its totient is φ = 1312544513236.

The previous prime is 1312544513219. The next prime is 1312544513263. The reversal of 1312544513237 is 7323154452131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044594378916 + 267950134321 = 1022054^2 + 517639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312544513237 - 2²⁶ = 1312477404373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312544513194 and 1312544513203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312544513297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656272256618 + 656272256619.

It is an arithmetic number, because the mean of its divisors is an integer number (656272256619).

Almost surely, 2^{1312544513237} is an apocalyptic number.

It is an amenable number.

1312544513237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312544513237 is an equidigital number, since it uses as much as digits as its factorization.

1312544513237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 41.

Adding to 1312544513237 its reverse (7323154452131), we get a palindrome (8635698965368).

The spelling of 1312544513237 in words is "one trillion, three hundred twelve billion, five hundred forty-four million, five hundred thirteen thousand, two hundred thirty-seven".