201105234 has 128 divisors (see below), whose sum is σ = 521164800. Its totient is φ = 56842560.

The previous prime is 201105211. The next prime is 201105239. The reversal of 201105234 is 432501102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201105239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1162372 + ... + 1162544.

It is an arithmetic number, because the mean of its divisors is an integer number (4071600).

Almost surely, 2^201105234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201105234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260582400).

201105234 is an abundant number, since it is smaller than the sum of its proper divisors (320059566).

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

201105234 is a wasteful number, since it uses less digits than its factorization.

201105234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201105234 is about 14181.1577101448. The cubic root of 201105234 is about 585.8788106465.

Adding to 201105234 its reverse (432501102), we get a palindrome (633606336).

The spelling of 201105234 in words is "two hundred one million, one hundred five thousand, two hundred thirty-four".