11311234091 has 2 divisors, whose sum is σ = 11311234092. Its totient is φ = 11311234090.

The previous prime is 11311234049. The next prime is 11311234139. The reversal of 11311234091 is 19043211311.

11311234091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311234091 is a prime.

It is a super-2 number, since 2×11311234091² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11311234091.

It is not a weakly prime, because it can be changed into another prime (11311234391) 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, 5655617045 + 5655617046.

It is an arithmetic number, because the mean of its divisors is an integer number (5655617046).

Almost surely, 2^11311234091 is an apocalyptic number.

11311234091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311234091 is an equidigital number, since it uses as much as digits as its factorization.

11311234091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 11311234091 in words is "eleven billion, three hundred eleven million, two hundred thirty-four thousand, ninety-one".