213145203 has 8 divisors (see below), whose sum is σ = 284521168. Its totient is φ = 141933024.

The previous prime is 213145199. The next prime is 213145217. The reversal of 213145203 is 302541312.

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

It is not a de Polignac number, because 213145203 - 2² = 213145199 is a prime.

It is a super-2 number, since 2×213145203² = 90861755123822418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213145203.

It is not an unprimeable number, because it can be changed into a prime (213145223) 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, 37876 + ... + 43137.

It is an arithmetic number, because the mean of its divisors is an integer number (35565146).

Almost surely, 2^213145203 is an apocalyptic number.

213145203 is a deficient number, since it is larger than the sum of its proper divisors (71375965).

213145203 is an equidigital number, since it uses as much as digits as its factorization.

213145203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81893.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 213145203 is about 14599.4932446301. The cubic root of 213145203 is about 597.3449378495.

Adding to 213145203 its reverse (302541312), we get a palindrome (515686515).

The spelling of 213145203 in words is "two hundred thirteen million, one hundred forty-five thousand, two hundred three".