404304431111021 has 8 divisors (see below), whose sum is σ = 462301493486784. Its totient is φ = 346367190360960.

The previous prime is 404304431111017. The next prime is 404304431111057. The reversal of 404304431111021 is 120111134403404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404304431111021 - 2² = 404304431111017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404304431111221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14955391940 + ... + 14955418973.

It is an arithmetic number, because the mean of its divisors is an integer number (57787686685848).

Almost surely, 2^{404304431111021} is an apocalyptic number.

It is an amenable number.

404304431111021 is a deficient number, since it is larger than the sum of its proper divisors (57997062375763).

404304431111021 is a wasteful number, since it uses less digits than its factorization.

404304431111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29910812851.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 404304431111021 its reverse (120111134403404), we get a palindrome (524415565514425).

The spelling of 404304431111021 in words is "four hundred four trillion, three hundred four billion, four hundred thirty-one million, one hundred eleven thousand, twenty-one".