33131022091 has 2 divisors, whose sum is σ = 33131022092. Its totient is φ = 33131022090.

The previous prime is 33131022047. The next prime is 33131022121. The reversal of 33131022091 is 19022013133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33131022091 - 2⁹ = 33131021579 is a prime.

It is not a weakly prime, because it can be changed into another prime (33131023091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565511045 + 16565511046.

It is an arithmetic number, because the mean of its divisors is an integer number (16565511046).

Almost surely, 2^33131022091 is an apocalyptic number.

33131022091 is a deficient number, since it is larger than the sum of its proper divisors (1).

33131022091 is an equidigital number, since it uses as much as digits as its factorization.

33131022091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 33131022091 in words is "thirty-three billion, one hundred thirty-one million, twenty-two thousand, ninety-one".