213723229 has 8 divisors (see below), whose sum is σ = 225273440. Its totient is φ = 202203216.

The previous prime is 213723227. The next prime is 213723253. The reversal of 213723229 is 922327312.

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 213723229 - 2¹ = 213723227 is a prime.

It is a super-2 number, since 2×213723229² = 91355237228372882, 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 213723229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213723221) 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, 7807 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (28159180).

Almost surely, 2^213723229 is an apocalyptic number.

It is an amenable number.

213723229 is a deficient number, since it is larger than the sum of its proper divisors (11550211).

213723229 is a wasteful number, since it uses less digits than its factorization.

213723229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15099.

The product of its digits is 9072, while the sum is 31.

The square root of 213723229 is about 14619.2759396627. The cubic root of 213723229 is about 597.8844280632.

The spelling of 213723229 in words is "two hundred thirteen million, seven hundred twenty-three thousand, two hundred twenty-nine".