203213313 has 32 divisors (see below), whose sum is σ = 311287680. Its totient is φ = 130939200.

The previous prime is 203213279. The next prime is 203213317. The reversal of 203213313 is 313312302.

It is not a de Polignac number, because 203213313 - 2⁸ = 203213057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203213317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116395 + ... + 118127.

It is an arithmetic number, because the mean of its divisors is an integer number (9727740).

Almost surely, 2^203213313 is an apocalyptic number.

It is an amenable number.

203213313 is a deficient number, since it is larger than the sum of its proper divisors (108074367).

203213313 is a wasteful number, since it uses less digits than its factorization.

203213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 203213313 is about 14255.2907020516. The cubic root of 203213313 is about 587.9188507337.

Adding to 203213313 its reverse (313312302), we get a palindrome (516525615).

The spelling of 203213313 in words is "two hundred three million, two hundred thirteen thousand, three hundred thirteen".