201131441 has 16 divisors (see below), whose sum is σ = 237834240. Its totient is φ = 166447440.

The previous prime is 201131423. The next prime is 201131453. The reversal of 201131441 is 144131102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201131441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201131401) 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, 126590 + ... + 128168.

It is an arithmetic number, because the mean of its divisors is an integer number (14864640).

Almost surely, 2^201131441 is an apocalyptic number.

It is an amenable number.

201131441 is a deficient number, since it is larger than the sum of its proper divisors (36702799).

201131441 is a wasteful number, since it uses less digits than its factorization.

201131441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 201131441 is about 14182.0816878200. The cubic root of 201131441 is about 585.9042591124.

Adding to 201131441 its reverse (144131102), we get a palindrome (345262543).

The spelling of 201131441 in words is "two hundred one million, one hundred thirty-one thousand, four hundred forty-one".