234091231 has 4 divisors (see below), whose sum is σ = 255372264. Its totient is φ = 212810200.

The previous prime is 234091213. The next prime is 234091237. The reversal of 234091231 is 132190432.

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 234091231 - 2²⁷ = 99873503 is a prime.

It is a super-2 number, since 2×234091231² = 109597408862190722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234091196 and 234091205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234091237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10640500 + ... + 10640521.

It is an arithmetic number, because the mean of its divisors is an integer number (63843066).

Almost surely, 2^234091231 is an apocalyptic number.

234091231 is a deficient number, since it is larger than the sum of its proper divisors (21281033).

234091231 is a wasteful number, since it uses less digits than its factorization.

234091231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21281032.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 234091231 is about 15300.0402287053. The cubic root of 234091231 is about 616.3040880350.

The spelling of 234091231 in words is "two hundred thirty-four million, ninety-one thousand, two hundred thirty-one".