1311936253 has 2 divisors, whose sum is σ = 1311936254. Its totient is φ = 1311936252.

The previous prime is 1311936233. The next prime is 1311936259. The reversal of 1311936253 is 3526391131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 760766724 + 551169529 = 27582^2 + 23477^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311936253 - 2¹⁷ = 1311805181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311936259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655968126 + 655968127.

It is an arithmetic number, because the mean of its divisors is an integer number (655968127).

Almost surely, 2^1311936253 is an apocalyptic number.

It is an amenable number.

1311936253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311936253 is an equidigital number, since it uses as much as digits as its factorization.

1311936253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 34.

The square root of 1311936253 is about 36220.6605820490. The cubic root of 1311936253 is about 1094.7230043784.

The spelling of 1311936253 in words is "one billion, three hundred eleven million, nine hundred thirty-six thousand, two hundred fifty-three".