201281263 has 4 divisors (see below), whose sum is σ = 201309928. Its totient is φ = 201252600.

The previous prime is 201281251. The next prime is 201281281. The reversal of 201281263 is 362182102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201281263 - 2¹³ = 201273071 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 (201281963) 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, 4120 + ... + 20482.

It is an arithmetic number, because the mean of its divisors is an integer number (50327482).

Almost surely, 2^201281263 is an apocalyptic number.

201281263 is a deficient number, since it is larger than the sum of its proper divisors (28665).

201281263 is a wasteful number, since it uses less digits than its factorization.

201281263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28664.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 201281263 is about 14187.3627922881. The cubic root of 201281263 is about 586.0497022457.

The spelling of 201281263 in words is "two hundred one million, two hundred eighty-one thousand, two hundred sixty-three".