431220324320 has 72 divisors (see below), whose sum is σ = 1047036710664. Its totient is φ = 167826203136.

The previous prime is 431220324239. The next prime is 431220324341. The reversal of 431220324320 is 23423022134.

It is a self number, because there is not a number n which added to its sum of digits gives 431220324320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765302 + ... + 1203381.

It is an arithmetic number, because the mean of its divisors is an integer number (14542176537).

Almost surely, 2^431220324320 is an apocalyptic number.

431220324320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431220324320 is an abundant number, since it is smaller than the sum of its proper divisors (615816386344).

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

431220324320 is a wasteful number, since it uses less digits than its factorization.

431220324320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968772 (or 1968727 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 431220324320 its reverse (23423022134), we get a palindrome (454643346454).

The spelling of 431220324320 in words is "four hundred thirty-one billion, two hundred twenty million, three hundred twenty-four thousand, three hundred twenty".