201775231 has 8 divisors (see below), whose sum is σ = 242737280. Its totient is φ = 163847448.

The previous prime is 201775219. The next prime is 201775253. The reversal of 201775231 is 132577102.

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 201775231 - 2⁵ = 201775199 is a prime.

It is a super-2 number, since 2×201775231² = 81426487690206722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201775231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201775201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758421 + ... + 758686.

It is an arithmetic number, because the mean of its divisors is an integer number (30342160).

Almost surely, 2^201775231 is an apocalyptic number.

201775231 is a deficient number, since it is larger than the sum of its proper divisors (40962049).

201775231 is a wasteful number, since it uses less digits than its factorization.

201775231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517133.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 201775231 is about 14204.7608568395. The cubic root of 201775231 is about 586.5287223381.

The spelling of 201775231 in words is "two hundred one million, seven hundred seventy-five thousand, two hundred thirty-one".