234023009 has 4 divisors (see below), whose sum is σ = 255297840. Its totient is φ = 212748180.

The previous prime is 234022979. The next prime is 234023021. The reversal of 234023009 is 900320432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234023009 - 2¹² = 234018913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234023059) 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, 10637399 + ... + 10637420.

It is an arithmetic number, because the mean of its divisors is an integer number (63824460).

Almost surely, 2^234023009 is an apocalyptic number.

It is an amenable number.

234023009 is a deficient number, since it is larger than the sum of its proper divisors (21274831).

234023009 is a wasteful number, since it uses less digits than its factorization.

234023009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21274830.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 234023009 is about 15297.8105949838. The cubic root of 234023009 is about 616.2442116889.

The spelling of 234023009 in words is "two hundred thirty-four million, twenty-three thousand, nine".