201132405 has 12 divisors (see below), whose sum is σ = 348629580. Its totient is φ = 107270592.

The previous prime is 201132367. The next prime is 201132409. The reversal of 201132405 is 504231102.

It can be written as a sum of positive squares in 2 ways, for example, as 34644996 + 166487409 = 5886^2 + 12903^2 .

It is not a de Polignac number, because 201132405 - 2⁷ = 201132277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201132409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2234760 + ... + 2234849.

It is an arithmetic number, because the mean of its divisors is an integer number (29052465).

Almost surely, 2^201132405 is an apocalyptic number.

It is an amenable number.

201132405 is a deficient number, since it is larger than the sum of its proper divisors (147497175).

201132405 is a wasteful number, since it uses less digits than its factorization.

201132405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469620 (or 4469617 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 201132405 is about 14182.1156743273. The cubic root of 201132405 is about 585.9051951683.

Adding to 201132405 its reverse (504231102), we get a palindrome (705363507).

The spelling of 201132405 in words is "two hundred one million, one hundred thirty-two thousand, four hundred five".