1312541311 has 2 divisors, whose sum is σ = 1312541312. Its totient is φ = 1312541310.

The previous prime is 1312541309. The next prime is 1312541357. The reversal of 1312541311 is 1131452131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312541311 - 2¹ = 1312541309 is a prime.

Together with 1312541309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312541911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656270655 + 656270656.

It is an arithmetic number, because the mean of its divisors is an integer number (656270656).

Almost surely, 2^1312541311 is an apocalyptic number.

1312541311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312541311 is an equidigital number, since it uses as much as digits as its factorization.

1312541311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 1312541311 is about 36229.0120069538. The cubic root of 1312541311 is about 1094.8912719826.

Adding to 1312541311 its reverse (1131452131), we get a palindrome (2443993442).

The spelling of 1312541311 in words is "one billion, three hundred twelve million, five hundred forty-one thousand, three hundred eleven".