31223102223 has 8 divisors (see below), whose sum is σ = 41676706048. Its totient is φ = 20792449944.

The previous prime is 31223102221. The next prime is 31223102227. The reversal of 31223102223 is 32220132213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31223102223 - 2¹ = 31223102221 is a prime.

It is a super-2 number, since 2×31223102223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31223102223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223102221) 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, 5734711 + ... + 5740152.

It is an arithmetic number, because the mean of its divisors is an integer number (5209588256).

Almost surely, 2^31223102223 is an apocalyptic number.

31223102223 is a deficient number, since it is larger than the sum of its proper divisors (10453603825).

31223102223 is a wasteful number, since it uses less digits than its factorization.

31223102223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11475773.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31223102223 its reverse (32220132213), we get a palindrome (63443234436).

The spelling of 31223102223 in words is "thirty-one billion, two hundred twenty-three million, one hundred two thousand, two hundred twenty-three".