431220332444 has 48 divisors (see below), whose sum is σ = 872397842400. Its totient is φ = 184634419200.

The previous prime is 431220332437. The next prime is 431220332471. The reversal of 431220332444 is 444233022134.

It is a super-2 number, since 2×431220332444² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431220332444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4068989 + ... + 4173620.

It is an arithmetic number, because the mean of its divisors is an integer number (18174955050).

Almost surely, 2^431220332444 is an apocalyptic number.

431220332444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

431220332444 is an abundant number, since it is smaller than the sum of its proper divisors (441177509956).

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

431220332444 is a wasteful number, since it uses less digits than its factorization.

431220332444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8242694 (or 8242692 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 431220332444 its reverse (444233022134), we get a palindrome (875453354578).

The spelling of 431220332444 in words is "four hundred thirty-one billion, two hundred twenty million, three hundred thirty-two thousand, four hundred forty-four".