320444431434 has 24 divisors (see below), whose sum is σ = 695512220832. Its totient is φ = 106627740840.

The previous prime is 320444431403. The next prime is 320444431451. The reversal of 320444431434 is 434134444023.

320444431434 is a `hidden beast` number, since 3 + 204 + 4 + 443 + 1 + 4 + 3 + 4 = 666.

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, 15578574 + ... + 15599129.

It is an arithmetic number, because the mean of its divisors is an integer number (28979675868).

Almost surely, 2^320444431434 is an apocalyptic number.

320444431434 is an abundant number, since it is smaller than the sum of its proper divisors (375067789398).

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

320444431434 is a wasteful number, since it uses less digits than its factorization.

320444431434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31178282 (or 31178279 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 320444431434 its reverse (434134444023), we get a palindrome (754578875457).

The spelling of 320444431434 in words is "three hundred twenty billion, four hundred forty-four million, four hundred thirty-one thousand, four hundred thirty-four".