23217229 has 12 divisors (see below), whose sum is σ = 27086400. Its totient is φ = 19842648.

The previous prime is 23217211. The next prime is 23217247. The reversal of 23217229 is 92271232.

It is an interprime number because it is at equal distance from previous prime (23217211) and next prime (23217247).

It is not a de Polignac number, because 23217229 - 2⁷ = 23217101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23217197 and 23217206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31932 + ... + 32650.

It is an arithmetic number, because the mean of its divisors is an integer number (2257200).

Almost surely, 2^23217229 is an apocalyptic number.

It is an amenable number.

23217229 is a deficient number, since it is larger than the sum of its proper divisors (3869171).

23217229 is an equidigital number, since it uses as much as digits as its factorization.

23217229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392 (or 1385 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 23217229 is about 4818.4259878097. The cubic root of 23217229 is about 285.2792133881.

The spelling of 23217229 in words is "twenty-three million, two hundred seventeen thousand, two hundred twenty-nine".