214221231 has 48 divisors (see below), whose sum is σ = 375835200. Its totient is φ = 114960384.

The previous prime is 214221211. The next prime is 214221239. The reversal of 214221231 is 132122412.

It is a happy number.

214221231 is a `hidden beast` number, since 214 + 221 + 231 = 666.

214221231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214221231 - 2⁶ = 214221167 is a prime.

It is a super-2 number, since 2×214221231² = 91781471622310722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214221239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66015 + ... + 69183.

It is an arithmetic number, because the mean of its divisors is an integer number (7829900).

Almost surely, 2^214221231 is an apocalyptic number.

214221231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

214221231 is a deficient number, since it is larger than the sum of its proper divisors (161613969).

214221231 is a wasteful number, since it uses less digits than its factorization.

214221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248 (or 3245 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 214221231 is about 14636.2984049930. The cubic root of 214221231 is about 598.3484498077.

Adding to 214221231 its reverse (132122412), we get a palindrome (346343643).

It can be divided in two parts, 214 and 221231, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 214221231 in words is "two hundred fourteen million, two hundred twenty-one thousand, two hundred thirty-one".