231334221 has 8 divisors (see below), whose sum is σ = 313673760. Its totient is φ = 151608752.

The previous prime is 231334219. The next prime is 231334223. The reversal of 231334221 is 122433132.

It is an interprime number because it is at equal distance from previous prime (231334219) and next prime (231334223).

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 231334221 - 2¹ = 231334219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231334223) 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, 653310 + ... + 653663.

It is an arithmetic number, because the mean of its divisors is an integer number (39209220).

Almost surely, 2^231334221 is an apocalyptic number.

It is an amenable number.

231334221 is a deficient number, since it is larger than the sum of its proper divisors (82339539).

231334221 is a wasteful number, since it uses less digits than its factorization.

231334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307035.

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

The square root of 231334221 is about 15209.6752430813. The cubic root of 231334221 is about 613.8750192129.

Adding to 231334221 its reverse (122433132), we get a palindrome (353767353).

The spelling of 231334221 in words is "two hundred thirty-one million, three hundred thirty-four thousand, two hundred twenty-one".