234331221 has 8 divisors (see below), whose sum is σ = 312520320. Its totient is φ = 156181472.

The previous prime is 234331219. The next prime is 234331231. The reversal of 234331221 is 122133432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 234331221 - 2¹ = 234331219 is a prime.

It is a super-2 number, since 2×234331221² = 109822242270701682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234331231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9481 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (39065040).

Almost surely, 2^234331221 is an apocalyptic number.

It is an amenable number.

234331221 is a deficient number, since it is larger than the sum of its proper divisors (78189099).

234331221 is a wasteful number, since it uses less digits than its factorization.

234331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19675.

The product of its digits is 864, while the sum is 21.

The square root of 234331221 is about 15307.8810094670. The cubic root of 234331221 is about 616.5146274638.

Adding to 234331221 its reverse (122133432), we get a palindrome (356464653).

The spelling of 234331221 in words is "two hundred thirty-four million, three hundred thirty-one thousand, two hundred twenty-one".