201223434 has 8 divisors (see below), whose sum is σ = 402446880. Its totient is φ = 67074476.

The previous prime is 201223397. The next prime is 201223439. The reversal of 201223434 is 434322102.

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

201223434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 201223434.

It is not an unprimeable number, because it can be changed into a prime (201223439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16768614 + ... + 16768625.

It is an arithmetic number, because the mean of its divisors is an integer number (50305860).

Almost surely, 2^201223434 is an apocalyptic number.

201223434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201223434 is a wasteful number, since it uses less digits than its factorization.

201223434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33537244.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 201223434 is about 14185.3245997404. The cubic root of 201223434 is about 585.9935719765.

Adding to 201223434 its reverse (434322102), we get a palindrome (635545536).

The spelling of 201223434 in words is "two hundred one million, two hundred twenty-three thousand, four hundred thirty-four".