404243442502031 has 6 divisors (see below), whose sum is σ = 444333701262696. Its totient is φ = 367494038638100.

The previous prime is 404243442501967. The next prime is 404243442502087. The reversal of 404243442502031 is 130205244342404.

It is not a de Polignac number, because 404243442502031 - 2⁶ = 404243442501967 is a prime.

It is a super-2 number, since 2×404243442502031² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404243442552031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1670427448235 + ... + 1670427448476.

It is an arithmetic number, because the mean of its divisors is an integer number (74055616877116).

Almost surely, 2^{404243442502031} is an apocalyptic number.

404243442502031 is a deficient number, since it is larger than the sum of its proper divisors (40090258760665).

404243442502031 is a wasteful number, since it uses less digits than its factorization.

404243442502031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340854896733 (or 3340854896722 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 404243442502031 its reverse (130205244342404), we get a palindrome (534448686844435).

The spelling of 404243442502031 in words is "four hundred four trillion, two hundred forty-three billion, four hundred forty-two million, five hundred two thousand, thirty-one".