201230144 has 14 divisors (see below), whose sum is σ = 399316194. Its totient is φ = 100615040.

The previous prime is 201230131. The next prime is 201230149. The reversal of 201230144 is 441032102.

It can be written as a sum of positive squares in only one way, i.e., 191545600 + 9684544 = 13840^2 + 3112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572047 + ... + 1572174.

Almost surely, 2^201230144 is an apocalyptic number.

It is an amenable number.

201230144 is a deficient number, since it is larger than the sum of its proper divisors (198086050).

201230144 is an equidigital number, since it uses as much as digits as its factorization.

201230144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144233 (or 3144223 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 201230144 is about 14185.5611098046. The cubic root of 201230144 is about 586.0000854213. Note that the first 4 decimals are identical.

Adding to 201230144 its reverse (441032102), we get a palindrome (642262246).

The spelling of 201230144 in words is "two hundred one million, two hundred thirty thousand, one hundred forty-four".