201323305 has 4 divisors (see below), whose sum is σ = 241587972. Its totient is φ = 161058640.

The previous prime is 201323303. The next prime is 201323351. The reversal of 201323305 is 503323102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503323102 = 2 ⋅251661551.

It can be written as a sum of positive squares in 2 ways, for example, as 61042969 + 140280336 = 7813^2 + 11844^2 .

It is not a de Polignac number, because 201323305 - 2¹ = 201323303 is a prime.

It is a super-2 number, since 2×201323305² = 81062146272246050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201323303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20132326 + ... + 20132335.

It is an arithmetic number, because the mean of its divisors is an integer number (60396993).

Almost surely, 2^201323305 is an apocalyptic number.

It is an amenable number.

201323305 is a deficient number, since it is larger than the sum of its proper divisors (40264667).

201323305 is an equidigital number, since it uses as much as digits as its factorization.

201323305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40264666.

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

The square root of 201323305 is about 14188.8443856433. The cubic root of 201323305 is about 586.0905025102.

Adding to 201323305 its reverse (503323102), we get a palindrome (704646407).

The spelling of 201323305 in words is "two hundred one million, three hundred twenty-three thousand, three hundred five".