34021020191 has 4 divisors (see below), whose sum is σ = 34021685400. Its totient is φ = 34020354984.

The previous prime is 34021020181. The next prime is 34021020233. The reversal of 34021020191 is 19102012043.

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 34021020191 - 2⁶ = 34021020127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34021020151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248861 + ... + 360518.

It is an arithmetic number, because the mean of its divisors is an integer number (8505421350).

Almost surely, 2^34021020191 is an apocalyptic number.

34021020191 is a deficient number, since it is larger than the sum of its proper divisors (665209).

34021020191 is an equidigital number, since it uses as much as digits as its factorization.

34021020191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665208.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 34021020191 in words is "thirty-four billion, twenty-one million, twenty thousand, one hundred ninety-one".