201330523 has 12 divisors (see below), whose sum is σ = 217271488. Its totient is φ = 186349680.

The previous prime is 201330497. The next prime is 201330539. The reversal of 201330523 is 325033102.

It is not a de Polignac number, because 201330523 - 2⁵ = 201330491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201330523.

It is not an unprimeable number, because it can be changed into a prime (201330823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10261 + ... + 22537.

Almost surely, 2^201330523 is an apocalyptic number.

201330523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201330523 is a deficient number, since it is larger than the sum of its proper divisors (15940965).

201330523 is a wasteful number, since it uses less digits than its factorization.

201330523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354 (or 12331 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 201330523 is about 14189.0987381158. The cubic root of 201330523 is about 586.0975067510.

Adding to 201330523 its reverse (325033102), we get a palindrome (526363625).

The spelling of 201330523 in words is "two hundred one million, three hundred thirty thousand, five hundred twenty-three".