201018234 has 32 divisors (see below), whose sum is σ = 428270976. Its totient is φ = 62681600.

The previous prime is 201018197. The next prime is 201018269. The reversal of 201018234 is 432810102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201018234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11134 + ... + 22934.

It is an arithmetic number, because the mean of its divisors is an integer number (13383468).

Almost surely, 2^201018234 is an apocalyptic number.

201018234 is an abundant number, since it is smaller than the sum of its proper divisors (227252742).

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

201018234 is a wasteful number, since it uses less digits than its factorization.

201018234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11990.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 201018234 is about 14178.0899277724. The cubic root of 201018234 is about 585.7943129144.

Adding to 201018234 its reverse (432810102), we get a palindrome (633828336).

The spelling of 201018234 in words is "two hundred one million, eighteen thousand, two hundred thirty-four".