320313031231 has 4 divisors (see below), whose sum is σ = 331358308200. Its totient is φ = 309267754264.

The previous prime is 320313031211. The next prime is 320313031253. The reversal of 320313031231 is 132130313023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132130313023 = 2897 ⋅45609359.

It is a cyclic number.

It is not a de Polignac number, because 320313031231 - 2¹³ = 320313023039 is a prime.

It is a super-2 number, since 2×320313031231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320313031211) 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, 5522638441 + ... + 5522638498.

It is an arithmetic number, because the mean of its divisors is an integer number (82839577050).

Almost surely, 2^320313031231 is an apocalyptic number.

320313031231 is a deficient number, since it is larger than the sum of its proper divisors (11045276969).

320313031231 is a wasteful number, since it uses less digits than its factorization.

320313031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045276968.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 320313031231 its reverse (132130313023), we get a palindrome (452443344254).

The spelling of 320313031231 in words is "three hundred twenty billion, three hundred thirteen million, thirty-one thousand, two hundred thirty-one".