201611323 has 4 divisors (see below), whose sum is σ = 203395608. Its totient is φ = 199827040.

The previous prime is 201611281. The next prime is 201611339. The reversal of 201611323 is 323116102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201611323 - 2⁹ = 201610811 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 201611323.

It is not an unprimeable number, because it can be changed into a prime (201611363) 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 3 ways as a sum of consecutive naturals, for example, 891973 + ... + 892198.

It is an arithmetic number, because the mean of its divisors is an integer number (50848902).

Almost surely, 2^201611323 is an apocalyptic number.

201611323 is a deficient number, since it is larger than the sum of its proper divisors (1784285).

201611323 is a wasteful number, since it uses less digits than its factorization.

201611323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784284.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 201611323 is about 14198.9902105748. The cubic root of 201611323 is about 586.3698610932.

Adding to 201611323 its reverse (323116102), we get a palindrome (524727425).

It can be divided in two parts, 201 and 611323, that added together give a square (611524 = 782²).

The spelling of 201611323 in words is "two hundred one million, six hundred eleven thousand, three hundred twenty-three".