320220031231 has 8 divisors (see below), whose sum is σ = 324081172800. Its totient is φ = 316364737920.

The previous prime is 320220031141. The next prime is 320220031273. The reversal of 320220031231 is 132130022023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320220031231 - 2¹⁵ = 320219998463 is a prime.

It is a super-2 number, since 2×320220031231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320220031199 and 320220031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320220031031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351846 + ... + 1570963.

It is an arithmetic number, because the mean of its divisors is an integer number (40510146600).

Almost surely, 2^320220031231 is an apocalyptic number.

320220031231 is a deficient number, since it is larger than the sum of its proper divisors (3861141569).

320220031231 is a wasteful number, since it uses less digits than its factorization.

320220031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924129.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320220031231 its reverse (132130022023), we get a palindrome (452350053254).

The spelling of 320220031231 in words is "three hundred twenty billion, two hundred twenty million, thirty-one thousand, two hundred thirty-one".