201311444 has 6 divisors (see below), whose sum is σ = 352295034. Its totient is φ = 100655720.

The previous prime is 201311419. The next prime is 201311449. The reversal of 201311444 is 444113102.

It can be written as a sum of positive squares in only one way, i.e., 201299344 + 12100 = 14188^2 + 110^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201311449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25163927 + ... + 25163934.

It is an arithmetic number, because the mean of its divisors is an integer number (58715839).

Almost surely, 2^201311444 is an apocalyptic number.

It is an amenable number.

201311444 is a deficient number, since it is larger than the sum of its proper divisors (150983590).

201311444 is a wasteful number, since it uses less digits than its factorization.

201311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50327865 (or 50327863 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 201311444 is about 14188.4264102824. The cubic root of 201311444 is about 586.0789924072.

Adding to 201311444 its reverse (444113102), we get a palindrome (645424546).

The spelling of 201311444 in words is "two hundred one million, three hundred eleven thousand, four hundred forty-four".