201313505 has 8 divisors (see below), whose sum is σ = 249906600. Its totient is φ = 155497216.

The previous prime is 201313501. The next prime is 201313537. The reversal of 201313505 is 505313102.

It can be written as a sum of positive squares in 4 ways, for example, as 74097664 + 127215841 = 8608^2 + 11279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201313505 - 2² = 201313501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201313501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694040 + ... + 694329.

It is an arithmetic number, because the mean of its divisors is an integer number (31238325).

Almost surely, 2^201313505 is an apocalyptic number.

It is an amenable number.

201313505 is a deficient number, since it is larger than the sum of its proper divisors (48593095).

201313505 is a wasteful number, since it uses less digits than its factorization.

201313505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388403.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 201313505 is about 14188.4990397152. The cubic root of 201313505 is about 586.0809924668.

Adding to 201313505 its reverse (505313102), we get a palindrome (706626607).

The spelling of 201313505 in words is "two hundred one million, three hundred thirteen thousand, five hundred five".