404143231135 has 32 divisors (see below), whose sum is σ = 562155282432. Its totient is φ = 273177260160.

The previous prime is 404143231133. The next prime is 404143231157. The reversal of 404143231135 is 531132341404.

It is not a de Polignac number, because 404143231135 - 2¹ = 404143231133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404143231097 and 404143231106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404143231133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21219837 + ... + 21238873.

It is an arithmetic number, because the mean of its divisors is an integer number (17567352576).

Almost surely, 2^404143231135 is an apocalyptic number.

404143231135 is a deficient number, since it is larger than the sum of its proper divisors (158012051297).

404143231135 is a wasteful number, since it uses less digits than its factorization.

404143231135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27663.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 404143231135 its reverse (531132341404), we get a palindrome (935275572539).

The spelling of 404143231135 in words is "four hundred four billion, one hundred forty-three million, two hundred thirty-one thousand, one hundred thirty-five".