201000231 has 16 divisors (see below), whose sum is σ = 315295200. Its totient is φ = 126117504.

The previous prime is 201000229. The next prime is 201000257. The reversal of 201000231 is 132000102.

It is a happy number.

It is not a de Polignac number, because 201000231 - 2¹ = 201000229 is a prime.

It is a super-2 number, since 2×201000231² = 80802185724106722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

201000231 is a modest number, since divided by 231 gives 201 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218496 + ... + 219413.

It is an arithmetic number, because the mean of its divisors is an integer number (19705950).

Almost surely, 2^201000231 is an apocalyptic number.

201000231 is a deficient number, since it is larger than the sum of its proper divisors (114294969).

201000231 is a wasteful number, since it uses less digits than its factorization.

201000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437935 (or 437929 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 201000231 is about 14177.4550254973. The cubic root of 201000231 is about 585.7768246670.

Adding to 201000231 its reverse (132000102), we get a palindrome (333000333).

The spelling of 201000231 in words is "two hundred one million, two hundred thirty-one", and thus it is an aban number.