404023131213 has 32 divisors (see below), whose sum is σ = 611275593600. Its totient is φ = 235309971456.

The previous prime is 404023131181. The next prime is 404023131269. The reversal of 404023131213 is 312131320404.

It is a happy number.

It is not a de Polignac number, because 404023131213 - 2⁵ = 404023131181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404023131613) 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, 477481 + ... + 1017857.

It is an arithmetic number, because the mean of its divisors is an integer number (19102362300).

Almost surely, 2^404023131213 is an apocalyptic number.

It is an amenable number.

404023131213 is a deficient number, since it is larger than the sum of its proper divisors (207252462387).

404023131213 is a wasteful number, since it uses less digits than its factorization.

404023131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541421.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 404023131213 its reverse (312131320404), we get a palindrome (716154451617).

The spelling of 404023131213 in words is "four hundred four billion, twenty-three million, one hundred thirty-one thousand, two hundred thirteen".