22204031 has 4 divisors (see below), whose sum is σ = 22332552. Its totient is φ = 22075512.

The previous prime is 22204009. The next prime is 22204051. The reversal of 22204031 is 13040222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22204031 is a prime.

It is a super-2 number, since 2×22204031² = 986037985297922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22203997 and 22204015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204051) 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, 64001 + ... + 64346.

It is an arithmetic number, because the mean of its divisors is an integer number (5583138).

Almost surely, 2^22204031 is an apocalyptic number.

22204031 is a deficient number, since it is larger than the sum of its proper divisors (128521).

22204031 is a wasteful number, since it uses less digits than its factorization.

22204031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128520.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22204031 is about 4712.1153423914. The cubic root of 22204031 is about 281.0674854693.

Adding to 22204031 its reverse (13040222), we get a palindrome (35244253).

The spelling of 22204031 in words is "twenty-two million, two hundred four thousand, thirty-one".