320505403124 has 12 divisors (see below), whose sum is σ = 564126563364. Its totient is φ = 159326385024.

The previous prime is 320505403117. The next prime is 320505403139. The reversal of 320505403124 is 421304505023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 188111303524 + 132394099600 = 433718^2 + 363860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231578357 + ... + 231579740.

It is an arithmetic number, because the mean of its divisors is an integer number (47010546947).

Almost surely, 2^320505403124 is an apocalyptic number.

It is an amenable number.

320505403124 is a deficient number, since it is larger than the sum of its proper divisors (243621160240).

320505403124 is a wasteful number, since it uses less digits than its factorization.

320505403124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463158274 (or 463158272 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 320505403124 its reverse (421304505023), we get a palindrome (741809908147).

The spelling of 320505403124 in words is "three hundred twenty billion, five hundred five million, four hundred three thousand, one hundred twenty-four".