203220213 has 16 divisors (see below), whose sum is σ = 310477440. Its totient is φ = 115822656.

The previous prime is 203220211. The next prime is 203220223. The reversal of 203220213 is 312022302.

It is not a de Polignac number, because 203220213 - 2¹ = 203220211 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203220192 and 203220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203220211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4270 + ... + 20607.

It is an arithmetic number, because the mean of its divisors is an integer number (19404840).

Almost surely, 2^203220213 is an apocalyptic number.

It is an amenable number.

203220213 is a deficient number, since it is larger than the sum of its proper divisors (107257227).

203220213 is a wasteful number, since it uses less digits than its factorization.

203220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25276.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 203220213 is about 14255.5327154056. The cubic root of 203220213 is about 587.9255048157.

Adding to 203220213 its reverse (312022302), we get a palindrome (515242515).

The spelling of 203220213 in words is "two hundred three million, two hundred twenty thousand, two hundred thirteen".