320121652 has 12 divisors (see below), whose sum is σ = 589697920. Its totient is φ = 151636536.

The previous prime is 320121623. The next prime is 320121673. The reversal of 320121652 is 256121023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2105988 + ... + 2106139.

Almost surely, 2^320121652 is an apocalyptic number.

It is an amenable number.

320121652 is a deficient number, since it is larger than the sum of its proper divisors (269576268).

320121652 is a wasteful number, since it uses less digits than its factorization.

320121652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212150 (or 4212148 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 320121652 is about 17891.9437736653. The cubic root of 320121652 is about 684.0770435201.

Adding to 320121652 its reverse (256121023), we get a palindrome (576242675).

The spelling of 320121652 in words is "three hundred twenty million, one hundred twenty-one thousand, six hundred fifty-two".