31220022223 has 8 divisors (see below), whose sum is σ = 34172736416. Its totient is φ = 28346047200.

The previous prime is 31220022191. The next prime is 31220022257. The reversal of 31220022223 is 32222002213.

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 31220022223 - 2⁵ = 31220022191 is a prime.

It is a super-2 number, since 2×31220022223² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31220022223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220092223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19683963 + ... + 19685548.

It is an arithmetic number, because the mean of its divisors is an integer number (4271592052).

Almost surely, 2^31220022223 is an apocalyptic number.

31220022223 is a deficient number, since it is larger than the sum of its proper divisors (2952714193).

31220022223 is a wasteful number, since it uses less digits than its factorization.

31220022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39369585.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 31220022223 its reverse (32222002213), we get a palindrome (63442024436).

The spelling of 31220022223 in words is "thirty-one billion, two hundred twenty million, twenty-two thousand, two hundred twenty-three".