320001213231 has 24 divisors (see below), whose sum is σ = 528274150560. Its totient is φ = 182851543296.

The previous prime is 320001213227. The next prime is 320001213239. The reversal of 320001213231 is 132312100023.

320001213231 is a `hidden beast` number, since 320 + 0 + 0 + 1 + 21 + 323 + 1 = 666.

It is not a de Polignac number, because 320001213231 - 2² = 320001213227 is a prime.

It is a super-2 number, since 2×320001213231² (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 (320001213239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2249971 + ... + 2387963.

It is an arithmetic number, because the mean of its divisors is an integer number (22011422940).

Almost surely, 2^320001213231 is an apocalyptic number.

320001213231 is a deficient number, since it is larger than the sum of its proper divisors (208272937329).

320001213231 is a wasteful number, since it uses less digits than its factorization.

320001213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174815 (or 174812 counting only the distinct ones).

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

Adding to 320001213231 its reverse (132312100023), we get a palindrome (452313313254).

The spelling of 320001213231 in words is "three hundred twenty billion, one million, two hundred thirteen thousand, two hundred thirty-one".