203030213 has 4 divisors (see below), whose sum is σ = 204164640. Its totient is φ = 201895788.

The previous prime is 203030203. The next prime is 203030239. The reversal of 203030213 is 312030302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312030302 = 2 ⋅156015151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203030213 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 (203030203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566945 + ... + 567302.

It is an arithmetic number, because the mean of its divisors is an integer number (51041160).

Almost surely, 2^203030213 is an apocalyptic number.

It is an amenable number.

203030213 is a deficient number, since it is larger than the sum of its proper divisors (1134427).

203030213 is a wasteful number, since it uses less digits than its factorization.

203030213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134426.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 203030213 is about 14248.8670777715. The cubic root of 203030213 is about 587.7422214121.

Adding to 203030213 its reverse (312030302), we get a palindrome (515060515).

The spelling of 203030213 in words is "two hundred three million, thirty thousand, two hundred thirteen".