203420133 has 32 divisors (see below), whose sum is σ = 345504000. Its totient is φ = 115872768.

The previous prime is 203420131. The next prime is 203420153. The reversal of 203420133 is 331024302.

It is not a de Polignac number, because 203420133 - 2¹ = 203420131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420131) 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 31 ways as a sum of consecutive naturals, for example, 65193 + ... + 68241.

It is an arithmetic number, because the mean of its divisors is an integer number (10797000).

Almost surely, 2^203420133 is an apocalyptic number.

It is an amenable number.

203420133 is a deficient number, since it is larger than the sum of its proper divisors (142083867).

203420133 is a wasteful number, since it uses less digits than its factorization.

203420133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 3412 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 203420133 is about 14262.5430060701. The cubic root of 203420133 is about 588.1182342415.

Adding to 203420133 its reverse (331024302), we get a palindrome (534444435).

The spelling of 203420133 in words is "two hundred three million, four hundred twenty thousand, one hundred thirty-three".