20231233 has 4 divisors (see below), whose sum is σ = 22070448. Its totient is φ = 18392020.

The previous prime is 20231203. The next prime is 20231243. The reversal of 20231233 is 33213202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20231233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231203) 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, 919591 + ... + 919612.

It is an arithmetic number, because the mean of its divisors is an integer number (5517612).

Almost surely, 2^20231233 is an apocalyptic number.

It is an amenable number.

20231233 is a deficient number, since it is larger than the sum of its proper divisors (1839215).

20231233 is a wasteful number, since it uses less digits than its factorization.

20231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839214.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20231233 is about 4497.9142944258. The cubic root of 20231233 is about 272.4838606719.

Adding to 20231233 its reverse (33213202), we get a palindrome (53444435).

The spelling of 20231233 in words is "twenty million, two hundred thirty-one thousand, two hundred thirty-three".