22004031 has 16 divisors (see below), whose sum is σ = 34988544. Its totient is φ = 12026784.

The previous prime is 22004009. The next prime is 22004039. The reversal of 22004031 is 13040022.

22004031 = 669² + 670² + ... + 714².

It is not a de Polignac number, because 22004031 - 2⁷ = 22003903 is a prime.

It is a super-2 number, since 2×22004031² = 968354760497922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22003998 and 22004016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22296 + ... + 23261.

It is an arithmetic number, because the mean of its divisors is an integer number (2186784).

Almost surely, 2^22004031 is an apocalyptic number.

22004031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22004031 is a deficient number, since it is larger than the sum of its proper divisors (12984513).

22004031 is a wasteful number, since it uses less digits than its factorization.

22004031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45590.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22004031 is about 4690.8454461856. The cubic root of 22004031 is about 280.2210456879.

Adding to 22004031 its reverse (13040022), we get a palindrome (35044053).

The spelling of 22004031 in words is "twenty-two million, four thousand, thirty-one".