23220347 has 2 divisors, whose sum is σ = 23220348. Its totient is φ = 23220346.

The previous prime is 23220319. The next prime is 23220361. The reversal of 23220347 is 74302232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23220347 - 2⁸ = 23220091 is a prime.

It is not a weakly prime, because it can be changed into another prime (23220377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610173 + 11610174.

It is an arithmetic number, because the mean of its divisors is an integer number (11610174).

Almost surely, 2^23220347 is an apocalyptic number.

23220347 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220347 is an equidigital number, since it uses as much as digits as its factorization.

23220347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 23220347 is about 4818.7495265888. The cubic root of 23220347 is about 285.2919835134.

Adding to 23220347 its reverse (74302232), we get a palindrome (97522579).

The spelling of 23220347 in words is "twenty-three million, two hundred twenty thousand, three hundred forty-seven".