22231306 has 8 divisors (see below), whose sum is σ = 33368580. Its totient is φ = 11108448.

The previous prime is 22231241. The next prime is 22231331. The reversal of 22231306 is 60313222.

It can be written as a sum of positive squares in 2 ways, for example, as 22231225 + 81 = 4715^2 + 9^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990 + ... + 6958.

Almost surely, 2^22231306 is an apocalyptic number.

22231306 is a deficient number, since it is larger than the sum of its proper divisors (11137274).

22231306 is a wasteful number, since it uses less digits than its factorization.

22231306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22231306 is about 4715.0085895998. The cubic root of 22231306 is about 281.1825243233.

Adding to 22231306 its reverse (60313222), we get a palindrome (82544528).

The spelling of 22231306 in words is "twenty-two million, two hundred thirty-one thousand, three hundred six".