23220343 has 4 divisors (see below), whose sum is σ = 23249448. Its totient is φ = 23191240.

The previous prime is 23220319. The next prime is 23220347. The reversal of 23220343 is 34302232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23220343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220347) 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, 13321 + ... + 14962.

It is an arithmetic number, because the mean of its divisors is an integer number (5812362).

Almost surely, 2^23220343 is an apocalyptic number.

23220343 is a deficient number, since it is larger than the sum of its proper divisors (29105).

23220343 is an equidigital number, since it uses as much as digits as its factorization.

23220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29104.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23220343 is about 4818.7491115434. The cubic root of 23220343 is about 285.2919671316.

Adding to 23220343 its reverse (34302232), we get a palindrome (57522575).

The spelling of 23220343 in words is "twenty-three million, two hundred twenty thousand, three hundred forty-three".