11333231989 has 2 divisors, whose sum is σ = 11333231990. Its totient is φ = 11333231988.

The previous prime is 11333231981. The next prime is 11333232023. The reversal of 11333231989 is 98913233311.

11333231989 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 can be written as a sum of positive squares in only one way, i.e., 11258271025 + 74960964 = 106105^2 + 8658^2 .

It is a cyclic number.

It is not a de Polignac number, because 11333231989 - 2³ = 11333231981 is a prime.

It is a super-2 number, since 2×11333231989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11333231981) 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, 5666615994 + 5666615995.

It is an arithmetic number, because the mean of its divisors is an integer number (5666615995).

Almost surely, 2^11333231989 is an apocalyptic number.

It is an amenable number.

11333231989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11333231989 is an equidigital number, since it uses as much as digits as its factorization.

11333231989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The spelling of 11333231989 in words is "eleven billion, three hundred thirty-three million, two hundred thirty-one thousand, nine hundred eighty-nine".