203131213 has 8 divisors (see below), whose sum is σ = 206236800. Its totient is φ = 200032560.

The previous prime is 203131207. The next prime is 203131217. The reversal of 203131213 is 312131302.

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

It is not a de Polignac number, because 203131213 - 2⁹ = 203130701 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 (203131217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109056 + ... + 110902.

It is an arithmetic number, because the mean of its divisors is an integer number (25779600).

Almost surely, 2^203131213 is an apocalyptic number.

It is an amenable number.

203131213 is a deficient number, since it is larger than the sum of its proper divisors (3105587).

203131213 is a wasteful number, since it uses less digits than its factorization.

203131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 203131213 is about 14252.4107785315. The cubic root of 203131213 is about 587.8396652403.

Adding to 203131213 its reverse (312131302), we get a palindrome (515262515).

The spelling of 203131213 in words is "two hundred three million, one hundred thirty-one thousand, two hundred thirteen".