213204003 has 4 divisors (see below), whose sum is σ = 284272008. Its totient is φ = 142136000.

The previous prime is 213203999. The next prime is 213204007. The reversal of 213204003 is 300402312.

213204003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213203999) and next prime (213204007).

It is a cyclic number.

It is not a de Polignac number, because 213204003 - 2² = 213203999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213204007) 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, 35533998 + ... + 35534003.

It is an arithmetic number, because the mean of its divisors is an integer number (71068002).

Almost surely, 2^213204003 is an apocalyptic number.

213204003 is a deficient number, since it is larger than the sum of its proper divisors (71068005).

213204003 is an equidigital number, since it uses as much as digits as its factorization.

213204003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71068004.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 213204003 is about 14601.5068742921. The cubic root of 213204003 is about 597.3998623055.

Adding to 213204003 its reverse (300402312), we get a palindrome (513606315).

The spelling of 213204003 in words is "two hundred thirteen million, two hundred four thousand, three".