201126231 has 6 divisors (see below), whose sum is σ = 290515680. Its totient is φ = 134084148.

The previous prime is 201126203. The next prime is 201126239. The reversal of 201126231 is 132621102.

It is not a de Polignac number, because 201126231 - 2¹⁰ = 201125207 is a prime.

It is a super-2 number, since 2×201126231² = 80903521592530722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201126239) 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 5 ways as a sum of consecutive naturals, for example, 11173671 + ... + 11173688.

It is an arithmetic number, because the mean of its divisors is an integer number (48419280).

Almost surely, 2^201126231 is an apocalyptic number.

201126231 is a deficient number, since it is larger than the sum of its proper divisors (89389449).

201126231 is a wasteful number, since it uses less digits than its factorization.

201126231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22347365 (or 22347362 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 201126231 is about 14181.8980041460. The cubic root of 201126231 is about 585.8992000864.

Adding to 201126231 its reverse (132621102), we get a palindrome (333747333).

The spelling of 201126231 in words is "two hundred one million, one hundred twenty-six thousand, two hundred thirty-one".