23220361 has 2 divisors, whose sum is σ = 23220362. Its totient is φ = 23220360.

The previous prime is 23220347. The next prime is 23220377. The reversal of 23220361 is 16302232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 6533136 = 4085^2 + 2556^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220361 - 2¹¹ = 23218313 is a prime.

It is not a weakly prime, because it can be changed into another prime (23221361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610180 + 11610181.

It is an arithmetic number, because the mean of its divisors is an integer number (11610181).

Almost surely, 2^23220361 is an apocalyptic number.

It is an amenable number.

23220361 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220361 is an equidigital number, since it uses as much as digits as its factorization.

23220361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 23220361 is about 4818.7509792476. The cubic root of 23220361 is about 285.2920408494.

Adding to 23220361 its reverse (16302232), we get a palindrome (39522593).

The spelling of 23220361 in words is "twenty-three million, two hundred twenty thousand, three hundred sixty-one".