201231441 has 12 divisors (see below), whose sum is σ = 290843280. Its totient is φ = 134073240.

The previous prime is 201231427. The next prime is 201231463. The reversal of 201231441 is 144132102.

201231441 is a `hidden beast` number, since 201 + 23 + 1 + 441 = 666.

It is not a de Polignac number, because 201231441 - 2⁹ = 201230929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201231341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11590 + ... + 23168.

It is an arithmetic number, because the mean of its divisors is an integer number (24236940).

Almost surely, 2^201231441 is an apocalyptic number.

It is an amenable number.

201231441 is a deficient number, since it is larger than the sum of its proper divisors (89611839).

201231441 is a wasteful number, since it uses less digits than its factorization.

201231441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13516 (or 13513 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 201231441 is about 14185.6068252296. The cubic root of 201231441 is about 586.0013444117.

Adding to 201231441 its reverse (144132102), we get a palindrome (345363543).

The spelling of 201231441 in words is "two hundred one million, two hundred thirty-one thousand, four hundred forty-one".