11431321235 has 4 divisors (see below), whose sum is σ = 13717585488. Its totient is φ = 9145056984.

The previous prime is 11431321211. The next prime is 11431321261. The reversal of 11431321235 is 53212313411.

11431321235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11431321235 - 2⁶ = 11431321171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1143132119 + ... + 1143132128.

It is an arithmetic number, because the mean of its divisors is an integer number (3429396372).

Almost surely, 2^11431321235 is an apocalyptic number.

11431321235 is a deficient number, since it is larger than the sum of its proper divisors (2286264253).

11431321235 is an equidigital number, since it uses as much as digits as its factorization.

11431321235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286264252.

The product of its digits is 2160, while the sum is 26.

Adding to 11431321235 its reverse (53212313411), we get a palindrome (64643634646).

The spelling of 11431321235 in words is "eleven billion, four hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty-five".