203838213 has 32 divisors (see below), whose sum is σ = 302054400. Its totient is φ = 121689216.

The previous prime is 203838203. The next prime is 203838221. The reversal of 203838213 is 312838302.

It is not a de Polignac number, because 203838213 - 2⁵ = 203838181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203838203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115806 + ... + 117552.

It is an arithmetic number, because the mean of its divisors is an integer number (9439200).

Almost surely, 2^203838213 is an apocalyptic number.

203838213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

203838213 is a deficient number, since it is larger than the sum of its proper divisors (98216187).

203838213 is a wasteful number, since it uses less digits than its factorization.

203838213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 203838213 is about 14277.1920558631. The cubic root of 203838213 is about 588.5208692723.

The spelling of 203838213 in words is "two hundred three million, eight hundred thirty-eight thousand, two hundred thirteen".