201144407 has 16 divisors (see below), whose sum is σ = 213375168. Its totient is φ = 189235200.

The previous prime is 201144403. The next prime is 201144421. The reversal of 201144407 is 704441102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201144407 - 2² = 201144403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201144403) 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, 501407 + ... + 501807.

It is an arithmetic number, because the mean of its divisors is an integer number (13335948).

Almost surely, 2^201144407 is an apocalyptic number.

201144407 is a deficient number, since it is larger than the sum of its proper divisors (12230761).

201144407 is a wasteful number, since it uses less digits than its factorization.

201144407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 201144407 is about 14182.5388065748. The cubic root of 201144407 is about 585.9168490078.

Adding to 201144407 its reverse (704441102), we get a palindrome (905585509).

The spelling of 201144407 in words is "two hundred one million, one hundred forty-four thousand, four hundred seven".