404240322331 has 4 divisors (see below), whose sum is σ = 404288277664. Its totient is φ = 404192367000.

The previous prime is 404240322289. The next prime is 404240322359. The reversal of 404240322331 is 133223042404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404240322331 - 2⁷ = 404240322203 is a prime.

It is a super-2 number, since 2×404240322331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404240322331.

It is not an unprimeable number, because it can be changed into a prime (404240322361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23965020 + ... + 23981881.

It is an arithmetic number, because the mean of its divisors is an integer number (101072069416).

Almost surely, 2^404240322331 is an apocalyptic number.

404240322331 is a deficient number, since it is larger than the sum of its proper divisors (47955333).

404240322331 is an equidigital number, since it uses as much as digits as its factorization.

404240322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47955332.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 404240322331 its reverse (133223042404), we get a palindrome (537463364735).

The spelling of 404240322331 in words is "four hundred four billion, two hundred forty million, three hundred twenty-two thousand, three hundred thirty-one".