31222021323023 has 4 divisors (see below), whose sum is σ = 31323721718520. Its totient is φ = 31120320927528.

The previous prime is 31222021323019. The next prime is 31222021323079. The reversal of 31222021323023 is 32032312022213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31222021323023 - 2² = 31222021323019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31222021322983 and 31222021323001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222021323223) 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, 50850197288 + ... + 50850197901.

It is an arithmetic number, because the mean of its divisors is an integer number (7830930429630).

Almost surely, 2^{31222021323023} is an apocalyptic number.

31222021323023 is a deficient number, since it is larger than the sum of its proper divisors (101700395497).

31222021323023 is a wasteful number, since it uses less digits than its factorization.

31222021323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700395496.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31222021323023 its reverse (32032312022213), we get a palindrome (63254333345236).

The spelling of 31222021323023 in words is "thirty-one trillion, two hundred twenty-two billion, twenty-one million, three hundred twenty-three thousand, twenty-three".