4312320320444 has 24 divisors (see below), whose sum is σ = 7689154622688. Its totient is φ = 2115421181120.

The previous prime is 4312320320443. The next prime is 4312320320447. The reversal of 4312320320444 is 4440230232134.

It is a super-2 number, since 2×4312320320444² (a number of 26 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 4312320320444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312320320443) 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, 8286209 + ... + 8791239.

It is an arithmetic number, because the mean of its divisors is an integer number (320381442612).

Almost surely, 2^{4312320320444} is an apocalyptic number.

It is an amenable number.

4312320320444 is a deficient number, since it is larger than the sum of its proper divisors (3376834302244).

4312320320444 is a wasteful number, since it uses less digits than its factorization.

4312320320444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545365 (or 545363 counting only the distinct ones).

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

Adding to 4312320320444 its reverse (4440230232134), we get a palindrome (8752550552578).

The spelling of 4312320320444 in words is "four trillion, three hundred twelve billion, three hundred twenty million, three hundred twenty thousand, four hundred forty-four".