11191312393 has 2 divisors, whose sum is σ = 11191312394. Its totient is φ = 11191312392.

The previous prime is 11191312343. The next prime is 11191312403. The reversal of 11191312393 is 39321319111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9453089529 + 1738222864 = 97227^2 + 41692^2 .

It is a cyclic number.

It is not a de Polignac number, because 11191312393 - 2²¹ = 11189215241 is a prime.

It is not a weakly prime, because it can be changed into another prime (11191312333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595656196 + 5595656197.

It is an arithmetic number, because the mean of its divisors is an integer number (5595656197).

Almost surely, 2^11191312393 is an apocalyptic number.

It is an amenable number.

11191312393 is a deficient number, since it is larger than the sum of its proper divisors (1).

11191312393 is an equidigital number, since it uses as much as digits as its factorization.

11191312393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 34.

The spelling of 11191312393 in words is "eleven billion, one hundred ninety-one million, three hundred twelve thousand, three hundred ninety-three".