213637223 has 8 divisors (see below), whose sum is σ = 223553088. Its totient is φ = 203939424.

The previous prime is 213637219. The next prime is 213637247. The reversal of 213637223 is 322736312.

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 213637223 - 2² = 213637219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213637423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52511 + ... + 56432.

It is an arithmetic number, because the mean of its divisors is an integer number (27944136).

Almost surely, 2^213637223 is an apocalyptic number.

213637223 is a deficient number, since it is larger than the sum of its proper divisors (9915865).

213637223 is a wasteful number, since it uses less digits than its factorization.

213637223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109033.

The product of its digits is 9072, while the sum is 29.

The square root of 213637223 is about 14616.3341163234. The cubic root of 213637223 is about 597.8042175536.

The spelling of 213637223 in words is "two hundred thirteen million, six hundred thirty-seven thousand, two hundred twenty-three".