20232263 has 4 divisors (see below), whose sum is σ = 20368200. Its totient is φ = 20096328.

The previous prime is 20232257. The next prime is 20232269. The reversal of 20232263 is 36223202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36223202 = 2 ⋅18111601.

It is an interprime number because it is at equal distance from previous prime (20232257) and next prime (20232269).

It is a cyclic number.

It is not a de Polignac number, because 20232263 - 2¹⁴ = 20215879 is a prime.

It is a super-2 number, since 2×20232263² = 818688932202338, which contains 22 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 (20232269) 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, 67745 + ... + 68042.

It is an arithmetic number, because the mean of its divisors is an integer number (5092050).

Almost surely, 2^20232263 is an apocalyptic number.

20232263 is a deficient number, since it is larger than the sum of its proper divisors (135937).

20232263 is a wasteful number, since it uses less digits than its factorization.

20232263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135936.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20232263 is about 4498.0287904814. The cubic root of 20232263 is about 272.4884847700.

Adding to 20232263 its reverse (36223202), we get a palindrome (56455465).

The spelling of 20232263 in words is "twenty million, two hundred thirty-two thousand, two hundred sixty-three".