213304903 has 8 divisors (see below), whose sum is σ = 244046880. Its totient is φ = 182630400.

The previous prime is 213304877. The next prime is 213304907. The reversal of 213304903 is 309403312.

It is a happy number.

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 213304903 - 2⁹ = 213304391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213304907) 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, 9898 + ... + 22903.

It is an arithmetic number, because the mean of its divisors is an integer number (30505860).

Almost surely, 2^213304903 is an apocalyptic number.

213304903 is a deficient number, since it is larger than the sum of its proper divisors (30741977).

213304903 is an equidigital number, since it uses as much as digits as its factorization.

213304903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33737.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 213304903 is about 14604.9615884466. The cubic root of 213304903 is about 597.4940883970.

The spelling of 213304903 in words is "two hundred thirteen million, three hundred four thousand, nine hundred three".