31224002223 has 16 divisors (see below), whose sum is σ = 41781950336. Its totient is φ = 20741101920.

The previous prime is 31224002213. The next prime is 31224002233. The reversal of 31224002223 is 32220042213.

It is an interprime number because it is at equal distance from previous prime (31224002213) and next prime (31224002233).

It is not a de Polignac number, because 31224002223 - 2¹⁰ = 31224001199 is a prime.

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 31224002223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224002213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1911336 + ... + 1927602.

It is an arithmetic number, because the mean of its divisors is an integer number (2611371896).

Almost surely, 2^31224002223 is an apocalyptic number.

31224002223 is a deficient number, since it is larger than the sum of its proper divisors (10557948113).

31224002223 is a wasteful number, since it uses less digits than its factorization.

31224002223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18534.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 31224002223 its reverse (32220042213), we get a palindrome (63444044436).

The spelling of 31224002223 in words is "thirty-one billion, two hundred twenty-four million, two thousand, two hundred twenty-three".