320240331 has 8 divisors (see below), whose sum is σ = 474430160. Its totient is φ = 213493536.

The previous prime is 320240321. The next prime is 320240351. The reversal of 320240331 is 133042023.

It is not a de Polignac number, because 320240331 - 2¹⁰ = 320239307 is a prime.

It is a super-2 number, since 2×320240331² = 205107739197979122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320240321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5930350 + ... + 5930403.

It is an arithmetic number, because the mean of its divisors is an integer number (59303770).

Almost surely, 2^320240331 is an apocalyptic number.

320240331 is a deficient number, since it is larger than the sum of its proper divisors (154189829).

320240331 is a wasteful number, since it uses less digits than its factorization.

320240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860762 (or 11860756 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320240331 is about 17895.2600148754. The cubic root of 320240331 is about 684.1615692500.

Adding to 320240331 its reverse (133042023), we get a palindrome (453282354).

The spelling of 320240331 in words is "three hundred twenty million, two hundred forty thousand, three hundred thirty-one".