234311221 has 8 divisors (see below), whose sum is σ = 248946264. Its totient is φ = 219770880.

The previous prime is 234311219. The next prime is 234311227. The reversal of 234311221 is 122113432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 78411025 + 155900196 = 8855^2 + 12486^2 .

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 234311221 - 2¹ = 234311219 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 (234311227) 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, 18540 + ... + 28501.

It is an arithmetic number, because the mean of its divisors is an integer number (31118283).

Almost surely, 2^234311221 is an apocalyptic number.

It is an amenable number.

234311221 is a deficient number, since it is larger than the sum of its proper divisors (14635043).

234311221 is a wasteful number, since it uses less digits than its factorization.

234311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47351.

The product of its digits is 288, while the sum is 19.

The square root of 234311221 is about 15307.2277372488. The cubic root of 234311221 is about 616.4970872725.

Adding to 234311221 its reverse (122113432), we get a palindrome (356424653).

The spelling of 234311221 in words is "two hundred thirty-four million, three hundred eleven thousand, two hundred twenty-one".