221723234 has 8 divisors (see below), whose sum is σ = 337549008. Its totient is φ = 109206900.

The previous prime is 221723233. The next prime is 221723237. The reversal of 221723234 is 432327122.

It is a happy number.

221723234 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221723234² = 98322384990837512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221723233) 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, 827192 + ... + 827459.

It is an arithmetic number, because the mean of its divisors is an integer number (42193626).

Almost surely, 2^221723234 is an apocalyptic number.

221723234 is a deficient number, since it is larger than the sum of its proper divisors (115825774).

221723234 is a wasteful number, since it uses less digits than its factorization.

221723234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654720.

The product of its digits is 4032, while the sum is 26.

The square root of 221723234 is about 14890.3738703902. The cubic root of 221723234 is about 605.2531636337.

The spelling of 221723234 in words is "two hundred twenty-one million, seven hundred twenty-three thousand, two hundred thirty-four".