22303331 has 2 divisors, whose sum is σ = 22303332. Its totient is φ = 22303330.

The previous prime is 22303327. The next prime is 22303343. The reversal of 22303331 is 13330322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22303331 - 2² = 22303327 is a prime.

It is a super-2 number, since 2×22303331² = 994877147391122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (22303361) by changing a digit.

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 as a sum of consecutive naturals, namely, 11151665 + 11151666.

It is an arithmetic number, because the mean of its divisors is an integer number (11151666).

Almost surely, 2^22303331 is an apocalyptic number.

22303331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22303331 is an equidigital number, since it uses as much as digits as its factorization.

22303331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 22303331 is about 4722.6402573137. The cubic root of 22303331 is about 281.4858554245.

Adding to 22303331 its reverse (13330322), we get a palindrome (35633653).

The spelling of 22303331 in words is "twenty-two million, three hundred three thousand, three hundred thirty-one".