404023031320 has 32 divisors (see below), whose sum is σ = 909393937200. Its totient is φ = 161548391808.

The previous prime is 404023031317. The next prime is 404023031359. The reversal of 404023031320 is 23130320404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 404023031291 and 404023031300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1792959 + ... + 2005678.

Almost surely, 2^404023031320 is an apocalyptic number.

404023031320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404023031320 is an abundant number, since it is smaller than the sum of its proper divisors (505370905880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404023031320 is a wasteful number, since it uses less digits than its factorization.

404023031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801307 (or 3801303 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 404023031320 its reverse (23130320404), we get a palindrome (427153351724).

The spelling of 404023031320 in words is "four hundred four billion, twenty-three million, thirty-one thousand, three hundred twenty".