320231540144 has 20 divisors (see below), whose sum is σ = 620589852624. Its totient is φ = 160079320128.

The previous prime is 320231540113. The next prime is 320231540147. The reversal of 320231540144 is 441045132023.

It is not an unprimeable number, because it can be changed into a prime (320231540147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205572 + ... + 2346275.

Almost surely, 2^320231540144 is an apocalyptic number.

It is an amenable number.

320231540144 is a deficient number, since it is larger than the sum of its proper divisors (300358312480).

320231540144 is a wasteful number, since it uses less digits than its factorization.

320231540144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556252 (or 4556246 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 320231540144 its reverse (441045132023), we get a palindrome (761276672167).

The spelling of 320231540144 in words is "three hundred twenty billion, two hundred thirty-one million, five hundred forty thousand, one hundred forty-four".