320020311231 has 24 divisors (see below), whose sum is σ = 463554000000. Its totient is φ = 212746448592.

The previous prime is 320020311203. The next prime is 320020311241. The reversal of 320020311231 is 132113020023.

320020311231 is a `hidden beast` number, since 320 + 0 + 2 + 0 + 311 + 2 + 31 = 666.

It is not a de Polignac number, because 320020311231 - 2⁵ = 320020311199 is a prime.

It is a super-3 number, since 3×320020311231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320020311241) 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, 5625870 + ... + 5682468.

It is an arithmetic number, because the mean of its divisors is an integer number (19314750000).

Almost surely, 2^320020311231 is an apocalyptic number.

320020311231 is a deficient number, since it is larger than the sum of its proper divisors (143533688769).

320020311231 is a wasteful number, since it uses less digits than its factorization.

320020311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58363 (or 58360 counting only the distinct ones).

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

Adding to 320020311231 its reverse (132113020023), we get a palindrome (452133331254).

The spelling of 320020311231 in words is "three hundred twenty billion, twenty million, three hundred eleven thousand, two hundred thirty-one".