1311523351 has 2 divisors, whose sum is σ = 1311523352. Its totient is φ = 1311523350.

The previous prime is 1311523321. The next prime is 1311523373. The reversal of 1311523351 is 1533251131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311523351 - 2²³ = 1303134743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311523321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655761675 + 655761676.

It is an arithmetic number, because the mean of its divisors is an integer number (655761676).

Almost surely, 2^1311523351 is an apocalyptic number.

1311523351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311523351 is an equidigital number, since it uses as much as digits as its factorization.

1311523351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 1311523351 is about 36214.9603202875. The cubic root of 1311523351 is about 1094.6081459658.

Adding to 1311523351 its reverse (1533251131), we get a palindrome (2844774482).

The spelling of 1311523351 in words is "one billion, three hundred eleven million, five hundred twenty-three thousand, three hundred fifty-one".