201291361 has 4 divisors (see below), whose sum is σ = 201899824. Its totient is φ = 200682900.

The previous prime is 201291347. The next prime is 201291397. The reversal of 201291361 is 163192102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201291361 - 2¹¹ = 201289313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201291341) 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 3 ways as a sum of consecutive naturals, for example, 303735 + ... + 304396.

It is an arithmetic number, because the mean of its divisors is an integer number (50474956).

Almost surely, 2^201291361 is an apocalyptic number.

It is an amenable number.

201291361 is a deficient number, since it is larger than the sum of its proper divisors (608463).

201291361 is an equidigital number, since it uses as much as digits as its factorization.

201291361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608462.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 201291361 is about 14187.7186679184. The cubic root of 201291361 is about 586.0595025136.

The spelling of 201291361 in words is "two hundred one million, two hundred ninety-one thousand, three hundred sixty-one".