320321001231 has 24 divisors (see below), whose sum is σ = 576855137664. Its totient is φ = 166400519760.

The previous prime is 320321001181. The next prime is 320321001241. The reversal of 320321001231 is 132100123023.

320321001231 is a `hidden beast` number, since 320 + 321 + 0 + 0 + 1 + 23 + 1 = 666.

It is not a de Polignac number, because 320321001231 - 2³⁷ = 182882047759 is a prime.

It is a super-2 number, since 2×320321001231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320321001241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231111141 + ... + 231112526.

It is an arithmetic number, because the mean of its divisors is an integer number (24035630736).

Almost surely, 2^320321001231 is an apocalyptic number.

320321001231 is a deficient number, since it is larger than the sum of its proper divisors (256534136433).

320321001231 is a wasteful number, since it uses less digits than its factorization.

320321001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462223691 (or 462223688 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 320321001231 its reverse (132100123023), we get a palindrome (452421124254).

The spelling of 320321001231 in words is "three hundred twenty billion, three hundred twenty-one million, one thousand, two hundred thirty-one".