320022120031 has 4 divisors (see below), whose sum is σ = 320384546872. Its totient is φ = 319659693192.

The previous prime is 320022120023. The next prime is 320022120053. The reversal of 320022120031 is 130021220023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130021220023 = 107 ⋅1215151589.

It is a cyclic number.

It is not a de Polignac number, because 320022120031 - 2³ = 320022120023 is a prime.

It is a super-2 number, since 2×320022120031² (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 = 320022119987 and 320022120014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320022120071) 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, 181212096 + ... + 181213861.

It is an arithmetic number, because the mean of its divisors is an integer number (80096136718).

Almost surely, 2^320022120031 is an apocalyptic number.

320022120031 is a deficient number, since it is larger than the sum of its proper divisors (362426841).

320022120031 is an equidigital number, since it uses as much as digits as its factorization.

320022120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362426840.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 320022120031 its reverse (130021220023), we get a palindrome (450043340054).

The spelling of 320022120031 in words is "three hundred twenty billion, twenty-two million, one hundred twenty thousand, thirty-one".