31321220212223 has 8 divisors (see below), whose sum is σ = 31398715824336. Its totient is φ = 31243796928000.

The previous prime is 31321220212187. The next prime is 31321220212229. The reversal of 31321220212223 is 32221202212313.

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 31321220212223 - 2²⁸ = 31320951776767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321220212192 and 31321220212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321220212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17214761 + ... + 18947042.

It is an arithmetic number, because the mean of its divisors is an integer number (3924839478042).

Almost surely, 2^{31321220212223} is an apocalyptic number.

31321220212223 is a deficient number, since it is larger than the sum of its proper divisors (77495612113).

31321220212223 is a wasteful number, since it uses less digits than its factorization.

31321220212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36163945.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31321220212223 its reverse (32221202212313), we get a palindrome (63542422424536).

The spelling of 31321220212223 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-three".