203421334 has 12 divisors (see below), whose sum is σ = 322037964. Its totient is φ = 96357132.

The previous prime is 203421331. The next prime is 203421389. The reversal of 203421334 is 433124302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203421331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140152 + ... + 141595.

It is an arithmetic number, because the mean of its divisors is an integer number (26836497).

Almost surely, 2^203421334 is an apocalyptic number.

203421334 is a deficient number, since it is larger than the sum of its proper divisors (118616630).

203421334 is a wasteful number, since it uses less digits than its factorization.

203421334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281787 (or 281768 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 203421334 is about 14262.5851092991. The cubic root of 203421334 is about 588.1193916632.

Adding to 203421334 its reverse (433124302), we get a palindrome (636545636).

The spelling of 203421334 in words is "two hundred three million, four hundred twenty-one thousand, three hundred thirty-four".