201326503 has 4 divisors (see below), whose sum is σ = 230087440. Its totient is φ = 172565568.

The previous prime is 201326459. The next prime is 201326519. The reversal of 201326503 is 305623102.

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

It is not a de Polignac number, because 201326503 - 2¹⁷ = 201195431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201326533) 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, 14380458 + ... + 14380471.

It is an arithmetic number, because the mean of its divisors is an integer number (57521860).

Almost surely, 2^201326503 is an apocalyptic number.

201326503 is a deficient number, since it is larger than the sum of its proper divisors (28760937).

201326503 is an equidigital number, since it uses as much as digits as its factorization.

201326503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28760936.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 201326503 is about 14188.9570793628. The cubic root of 201326503 is about 586.0936058229.

Adding to 201326503 its reverse (305623102), we get a palindrome (506949605).

The spelling of 201326503 in words is "two hundred one million, three hundred twenty-six thousand, five hundred three".