22123031 has 8 divisors (see below), whose sum is σ = 25322784. Its totient is φ = 18933120.

The previous prime is 22123021. The next prime is 22123043. The reversal of 22123031 is 13032122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22123031 is a prime.

It is a super-2 number, since 2×22123031² = 978857001253922, 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 = 22122997 and 22123015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123021) 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 in 7 ways as a sum of consecutive naturals, for example, 3251 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (3165348).

Almost surely, 2^22123031 is an apocalyptic number.

22123031 is a deficient number, since it is larger than the sum of its proper divisors (3199753).

22123031 is an equidigital number, since it uses as much as digits as its factorization.

22123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22123031 is about 4703.5126235612. The cubic root of 22123031 is about 280.7252922510.

Adding to 22123031 its reverse (13032122), we get a palindrome (35155153).

Subtracting from 22123031 its reverse (13032122), we obtain a palindrome (9090909).

The spelling of 22123031 in words is "twenty-two million, one hundred twenty-three thousand, thirty-one".