31222000320223 has 4 divisors (see below), whose sum is σ = 31278054181320. Its totient is φ = 31165946459128.

The previous prime is 31222000320221. The next prime is 31222000320257. The reversal of 31222000320223 is 32202300022213.

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 31222000320223 - 2¹ = 31222000320221 is a prime.

It is a super-2 number, since 2×31222000320223² (a number of 28 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 = 31222000320194 and 31222000320203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222000320221) 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, 28026929713 + ... + 28026930826.

It is an arithmetic number, because the mean of its divisors is an integer number (7819513545330).

Almost surely, 2^{31222000320223} is an apocalyptic number.

31222000320223 is a deficient number, since it is larger than the sum of its proper divisors (56053861097).

31222000320223 is an equidigital number, since it uses as much as digits as its factorization.

31222000320223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56053861096.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31222000320223 its reverse (32202300022213), we get a palindrome (63424300342436).

The spelling of 31222000320223 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred twenty thousand, two hundred twenty-three".