20112623 has 4 divisors (see below), whose sum is σ = 20146800. Its totient is φ = 20078448.

The previous prime is 20112611. The next prime is 20112629. The reversal of 20112623 is 32621102.

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 20112623 - 2⁴ = 20112607 is a prime.

It is a super-3 number, since 3×20112623³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112629) 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, 16190 + ... + 17387.

It is an arithmetic number, because the mean of its divisors is an integer number (5036700).

Almost surely, 2^20112623 is an apocalyptic number.

20112623 is a deficient number, since it is larger than the sum of its proper divisors (34177).

20112623 is an equidigital number, since it uses as much as digits as its factorization.

20112623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34176.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20112623 is about 4484.7099125807. The cubic root of 20112623 is about 271.9503180237.

Adding to 20112623 its reverse (32621102), we get a palindrome (52733725).

The spelling of 20112623 in words is "twenty million, one hundred twelve thousand, six hundred twenty-three".