22200031 has 4 divisors (see below), whose sum is σ = 25371472. Its totient is φ = 19028592.

The previous prime is 22200023. The next prime is 22200043. The reversal of 22200031 is 13000222.

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

It is a cyclic number.

It is not a de Polignac number, because 22200031 - 2³ = 22200023 is a prime.

It is a super-2 number, since 2×22200031² = 985682752801922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22199990 and 22200017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585710 + ... + 1585723.

It is an arithmetic number, because the mean of its divisors is an integer number (6342868).

Almost surely, 2^22200031 is an apocalyptic number.

22200031 is a deficient number, since it is larger than the sum of its proper divisors (3171441).

22200031 is an equidigital number, since it uses as much as digits as its factorization.

22200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171440.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22200031 is about 4711.6908854465. The cubic root of 22200031 is about 281.0506065903.

Adding to 22200031 its reverse (13000222), we get a palindrome (35200253).

The spelling of 22200031 in words is "twenty-two million, two hundred thousand, thirty-one".