231000201 has 16 divisors (see below), whose sum is σ = 357102720. Its totient is φ = 147304080.

The previous prime is 231000193. The next prime is 231000239. The reversal of 231000201 is 102000132.

It is a happy number.

It is not a de Polignac number, because 231000201 - 2³ = 231000193 is a prime.

It is a super-2 number, since 2×231000201² = 106722185724080802, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231000241) 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, 185370 + ... + 186611.

It is an arithmetic number, because the mean of its divisors is an integer number (22318920).

Almost surely, 2^231000201 is an apocalyptic number.

It is an amenable number.

231000201 is a deficient number, since it is larger than the sum of its proper divisors (126102519).

231000201 is a wasteful number, since it uses less digits than its factorization.

231000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372013 (or 372007 counting only the distinct ones).

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

The square root of 231000201 is about 15198.6907659838. The cubic root of 231000201 is about 613.5794219307.

Adding to 231000201 its reverse (102000132), we get a palindrome (333000333).

The spelling of 231000201 in words is "two hundred thirty-one million, two hundred one", and thus it is an aban number.