22731201 has 24 divisors (see below), whose sum is σ = 34754720. Its totient is φ = 14276736.

The previous prime is 22731167. The next prime is 22731211. The reversal of 22731201 is 10213722.

It is not a de Polignac number, because 22731201 - 2¹⁰ = 22730177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22731211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52281 + ... + 52713.

Almost surely, 2^22731201 is an apocalyptic number.

It is an amenable number.

22731201 is a deficient number, since it is larger than the sum of its proper divisors (12023519).

22731201 is a wasteful number, since it uses less digits than its factorization.

22731201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 22731201 is about 4767.7249291460. The cubic root of 22731201 is about 283.2744863561.

Adding to 22731201 its reverse (10213722), we get a palindrome (32944923).

The spelling of 22731201 in words is "twenty-two million, seven hundred thirty-one thousand, two hundred one".