23220213 has 8 divisors (see below), whose sum is σ = 32028000. Its totient is φ = 14946288.

The previous prime is 23220187. The next prime is 23220221. The reversal of 23220213 is 31202232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23220213 - 2⁶ = 23220149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23220192 and 23220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133363 + ... + 133536.

It is an arithmetic number, because the mean of its divisors is an integer number (4003500).

Almost surely, 2^23220213 is an apocalyptic number.

It is an amenable number.

23220213 is a deficient number, since it is larger than the sum of its proper divisors (8807787).

23220213 is a wasteful number, since it uses less digits than its factorization.

23220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266931.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23220213 is about 4818.7356225466. The cubic root of 23220213 is about 285.2914347246.

Adding to 23220213 its reverse (31202232), we get a palindrome (54422445).

The spelling of 23220213 in words is "twenty-three million, two hundred twenty thousand, two hundred thirteen".