431100104421 has 32 divisors (see below), whose sum is σ = 663995824128. Its totient is φ = 243692475840.

The previous prime is 431100104387. The next prime is 431100104437. The reversal of 431100104421 is 124401001134.

It is not a de Polignac number, because 431100104421 - 2⁷ = 431100104293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431100104521) 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, 1943131 + ... + 2153591.

It is an arithmetic number, because the mean of its divisors is an integer number (20749869504).

Almost surely, 2^431100104421 is an apocalyptic number.

It is an amenable number.

431100104421 is a deficient number, since it is larger than the sum of its proper divisors (232895719707).

431100104421 is a wasteful number, since it uses less digits than its factorization.

431100104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211521.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 431100104421 its reverse (124401001134), we get a palindrome (555501105555).

The spelling of 431100104421 in words is "four hundred thirty-one billion, one hundred million, one hundred four thousand, four hundred twenty-one".