203323213 has 8 divisors (see below), whose sum is σ = 215802360. Its totient is φ = 190901760.

The previous prime is 203323189. The next prime is 203323231. The reversal of 203323213 is 312323302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12938409 + 190384804 = 3597^2 + 13798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203323213 - 2⁵ = 203323181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203320213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7048 + ... + 21361.

It is an arithmetic number, because the mean of its divisors is an integer number (26975295).

Almost surely, 2^203323213 is an apocalyptic number.

It is an amenable number.

203323213 is a deficient number, since it is larger than the sum of its proper divisors (12479147).

203323213 is a wasteful number, since it uses less digits than its factorization.

203323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28847.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 203323213 is about 14259.1448902099. The cubic root of 203323213 is about 588.0248159656.

Adding to 203323213 its reverse (312323302), we get a palindrome (515646515).

It can be divided in two parts, 20 and 3323213, that added together give a palindrome (3323233).

The spelling of 203323213 in words is "two hundred three million, three hundred twenty-three thousand, two hundred thirteen".