20233361 has 4 divisors (see below), whose sum is σ = 20314224. Its totient is φ = 20152500.

The previous prime is 20233321. The next prime is 20233363. The reversal of 20233361 is 16333202.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16333202 = 2 ⋅8166601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233363) 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, 40055 + ... + 40556.

It is an arithmetic number, because the mean of its divisors is an integer number (5078556).

Almost surely, 2^20233361 is an apocalyptic number.

It is an amenable number.

20233361 is a deficient number, since it is larger than the sum of its proper divisors (80863).

20233361 is an equidigital number, since it uses as much as digits as its factorization.

20233361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80862.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 20233361 is about 4498.1508422906. The cubic root of 20233361 is about 272.4934139754.

Adding to 20233361 its reverse (16333202), we get a palindrome (36566563).

The spelling of 20233361 in words is "twenty million, two hundred thirty-three thousand, three hundred sixty-one".