203231213 has 8 divisors (see below), whose sum is σ = 206486400. Its totient is φ = 199993248.

The previous prime is 203231207. The next prime is 203231251. The reversal of 203231213 is 312132302.

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 203231213 - 2¹² = 203227117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203231191 and 203231200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203231113) 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, 20618 + ... + 28836.

It is an arithmetic number, because the mean of its divisors is an integer number (25810800).

Almost surely, 2^203231213 is an apocalyptic number.

It is an amenable number.

203231213 is a deficient number, since it is larger than the sum of its proper divisors (3255187).

203231213 is an equidigital number, since it uses as much as digits as its factorization.

203231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 203231213 is about 14255.9185253003. The cubic root of 203231213 is about 587.9361124611.

Adding to 203231213 its reverse (312132302), we get a palindrome (515363515).

The spelling of 203231213 in words is "two hundred three million, two hundred thirty-one thousand, two hundred thirteen".