11431431313 has 2 divisors, whose sum is σ = 11431431314. Its totient is φ = 11431431312.

The previous prime is 11431431289. The next prime is 11431431331. The reversal of 11431431313 is 31313413411.

11431431313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11431431331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7384308624 + 4047122689 = 85932^2 + 63617^2 .

It is a cyclic number.

It is not a de Polignac number, because 11431431313 - 2⁵ = 11431431281 is a prime.

It is not a weakly prime, because it can be changed into another prime (11431431343) 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, 5715715656 + 5715715657.

It is an arithmetic number, because the mean of its divisors is an integer number (5715715657).

Almost surely, 2^11431431313 is an apocalyptic number.

It is an amenable number.

11431431313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431431313 is an equidigital number, since it uses as much as digits as its factorization.

11431431313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

Adding to 11431431313 its reverse (31313413411), we get a palindrome (42744844724).

The spelling of 11431431313 in words is "eleven billion, four hundred thirty-one million, four hundred thirty-one thousand, three hundred thirteen".