320000332331 has 4 divisors (see below), whose sum is σ = 320044556832. Its totient is φ = 319956107832.

The previous prime is 320000332319. The next prime is 320000332343. The reversal of 320000332331 is 133233000023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133233000023 = 43 ⋅3098441861.

It is an interprime number because it is at equal distance from previous prime (320000332319) and next prime (320000332343).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320000332331 is a prime.

It is a super-2 number, since 2×320000332331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320000332361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22101395 + ... + 22115868.

It is an arithmetic number, because the mean of its divisors is an integer number (80011139208).

Almost surely, 2^320000332331 is an apocalyptic number.

320000332331 is a deficient number, since it is larger than the sum of its proper divisors (44224501).

320000332331 is an equidigital number, since it uses as much as digits as its factorization.

320000332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44224500.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 320000332331 its reverse (133233000023), we get a palindrome (453233332354).

The spelling of 320000332331 in words is "three hundred twenty billion, three hundred thirty-two thousand, three hundred thirty-one".