201042231 has 12 divisors (see below), whose sum is σ = 290262888. Its totient is φ = 123717984.

The previous prime is 201042209. The next prime is 201042253. The reversal of 201042231 is 132240102.

It is an interprime number because it is at equal distance from previous prime (201042209) and next prime (201042253).

It is not a de Polignac number, because 201042231 - 2⁵ = 201042199 is a prime.

It is a super-2 number, since 2×201042231² = 80835957290914722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201042231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201042131) 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 11 ways as a sum of consecutive naturals, for example, 197760 + ... + 198773.

It is an arithmetic number, because the mean of its divisors is an integer number (24188574).

Almost surely, 2^201042231 is an apocalyptic number.

201042231 is a deficient number, since it is larger than the sum of its proper divisors (89220657).

201042231 is a wasteful number, since it uses less digits than its factorization.

201042231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396562 (or 396549 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201042231 is about 14178.9361730702. The cubic root of 201042231 is about 585.8176221544.

Adding to 201042231 its reverse (132240102), we get a palindrome (333282333).

The spelling of 201042231 in words is "two hundred one million, forty-two thousand, two hundred thirty-one".