213803899 has 4 divisors (see below), whose sum is σ = 216206280. Its totient is φ = 211401520.

The previous prime is 213803881. The next prime is 213803911. The reversal of 213803899 is 998308312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213803899 - 2⁵ = 213803867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213803819) 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, 1201057 + ... + 1201234.

It is an arithmetic number, because the mean of its divisors is an integer number (54051570).

Almost surely, 2^213803899 is an apocalyptic number.

213803899 is a deficient number, since it is larger than the sum of its proper divisors (2402381).

213803899 is an equidigital number, since it uses as much as digits as its factorization.

213803899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402380.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 213803899 is about 14622.0347079331. The cubic root of 213803899 is about 597.9596425824.

The spelling of 213803899 in words is "two hundred thirteen million, eight hundred three thousand, eight hundred ninety-nine".