320531075 has 12 divisors (see below), whose sum is σ = 401396928. Its totient is φ = 253884000.

The previous prime is 320531069. The next prime is 320531131. The reversal of 320531075 is 570135023.

It is not a de Polignac number, because 320531075 - 2¹⁶ = 320465539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60947 + ... + 65996.

It is an arithmetic number, because the mean of its divisors is an integer number (33449744).

Almost surely, 2^320531075 is an apocalyptic number.

320531075 is a deficient number, since it is larger than the sum of its proper divisors (80865853).

320531075 is a wasteful number, since it uses less digits than its factorization.

320531075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127054 (or 127049 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 320531075 is about 17903.3816638087. The cubic root of 320531075 is about 684.3685551543.

Adding to 320531075 its reverse (570135023), we get a palindrome (890666098).

The spelling of 320531075 in words is "three hundred twenty million, five hundred thirty-one thousand, seventy-five".