203214321 has 12 divisors (see below), whose sum is σ = 296559172. Its totient is φ = 134078976.

The previous prime is 203214301. The next prime is 203214343. The reversal of 203214321 is 123412302.

203214321 is a `hidden beast` number, since 20 + 321 + 4 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45360225 + 157854096 = 6735^2 + 12564^2 .

It is not a de Polignac number, because 203214321 - 2¹⁴ = 203197937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203214294 and 203214303.

It is not an unprimeable number, because it can be changed into a prime (203214301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115516 + ... + 117261.

Almost surely, 2^203214321 is an apocalyptic number.

It is an amenable number.

203214321 is a deficient number, since it is larger than the sum of its proper divisors (93344851).

203214321 is a wasteful number, since it uses less digits than its factorization.

203214321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232880 (or 232877 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 203214321 is about 14255.3260573022. The cubic root of 203214321 is about 587.9198228177.

Adding to 203214321 its reverse (123412302), we get a palindrome (326626623).

It can be divided in two parts, 20321 and 4321, that added together give a palindrome (24642).

The spelling of 203214321 in words is "two hundred three million, two hundred fourteen thousand, three hundred twenty-one".