1223435217 has 16 divisors (see below), whose sum is σ = 1647179072. Its totient is φ = 807693120.

The previous prime is 1223435201. The next prime is 1223435219. The reversal of 1223435217 is 7125343221.

It is not a de Polignac number, because 1223435217 - 2⁴ = 1223435201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223435219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140367 + ... + 148827.

It is an arithmetic number, because the mean of its divisors is an integer number (102948692).

Almost surely, 2^1223435217 is an apocalyptic number.

It is an amenable number.

1223435217 is a deficient number, since it is larger than the sum of its proper divisors (423743855).

1223435217 is a wasteful number, since it uses less digits than its factorization.

1223435217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928.

The product of its digits is 10080, while the sum is 30.

The square root of 1223435217 is about 34977.6388139623. The cubic root of 1223435217 is about 1069.5316950881.

Adding to 1223435217 its reverse (7125343221), we get a palindrome (8348778438).

The spelling of 1223435217 in words is "one billion, two hundred twenty-three million, four hundred thirty-five thousand, two hundred seventeen".