234912091 has 4 divisors (see below), whose sum is σ = 238220784. Its totient is φ = 231603400.

The previous prime is 234912077. The next prime is 234912101. The reversal of 234912091 is 190219432.

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 234912091 - 2²⁵ = 201357659 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234912031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654240 + ... + 1654381.

It is an arithmetic number, because the mean of its divisors is an integer number (59555196).

Almost surely, 2^234912091 is an apocalyptic number.

234912091 is a deficient number, since it is larger than the sum of its proper divisors (3308693).

234912091 is an equidigital number, since it uses as much as digits as its factorization.

234912091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308692.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 234912091 is about 15326.8421731288. The cubic root of 234912091 is about 617.0236211774.

The spelling of 234912091 in words is "two hundred thirty-four million, nine hundred twelve thousand, ninety-one".