201316285 has 4 divisors (see below), whose sum is σ = 241579548. Its totient is φ = 161053024.

The previous prime is 201316277. The next prime is 201316301. The reversal of 201316285 is 582613102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582613102 = 2 ⋅291306551.

It can be written as a sum of positive squares in 2 ways, for example, as 131125401 + 70190884 = 11451^2 + 8378^2 .

It is a cyclic number.

It is not a de Polignac number, because 201316285 - 2³ = 201316277 is a prime.

It is a super-4 number, since 4×201316285⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20131624 + ... + 20131633.

It is an arithmetic number, because the mean of its divisors is an integer number (60394887).

Almost surely, 2^201316285 is an apocalyptic number.

It is an amenable number.

201316285 is a deficient number, since it is larger than the sum of its proper divisors (40263263).

201316285 is an equidigital number, since it uses as much as digits as its factorization.

201316285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40263262.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 201316285 is about 14188.5970060468. The cubic root of 201316285 is about 586.0836902452.

Adding to 201316285 its reverse (582613102), we get a palindrome (783929387).

It can be divided in two parts, 201316 and 285, that added together give a square (201601 = 449²).

The spelling of 201316285 in words is "two hundred one million, three hundred sixteen thousand, two hundred eighty-five".