234391 has 4 divisors (see below), whose sum is σ = 241984. Its totient is φ = 226800.

The previous prime is 234383. The next prime is 234431. The reversal of 234391 is 193432.

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 234391 - 2³ = 234383 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 (234331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3750 + ... + 3811.

It is an arithmetic number, because the mean of its divisors is an integer number (60496).

2²³⁴³⁹¹ is an apocalyptic number.

234391 is a deficient number, since it is larger than the sum of its proper divisors (7593).

234391 is an equidigital number, since it uses as much as digits as its factorization.

234391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7592.

The product of its digits is 648, while the sum is 22.

The square root of 234391 is about 484.1394427229. The cubic root of 234391 is about 61.6567048270.

It can be divided in two parts, 234 and 391, that added together give a 4-th power (625 = 5⁴).

The spelling of 234391 in words is "two hundred thirty-four thousand, three hundred ninety-one".