201045306 has 64 divisors (see below), whose sum is σ = 505875456. Its totient is φ = 51744000.

The previous prime is 201045293. The next prime is 201045311. The reversal of 201045306 is 603540102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 50281 + ... + 54131.

It is an arithmetic number, because the mean of its divisors is an integer number (7904304).

Almost surely, 2^201045306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201045306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252937728).

201045306 is an abundant number, since it is smaller than the sum of its proper divisors (304830150).

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

201045306 is a wasteful number, since it uses less digits than its factorization.

201045306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 201045306 is about 14179.0446081533. The cubic root of 201045306 is about 585.8206088901.

Adding to 201045306 its reverse (603540102), we get a palindrome (804585408).

The spelling of 201045306 in words is "two hundred one million, forty-five thousand, three hundred six".