31223000223 has 12 divisors (see below), whose sum is σ = 45156486648. Its totient is φ = 20789211600.

The previous prime is 31223000209. The next prime is 31223000353. The reversal of 31223000223 is 32200032213.

It is a happy number.

It is not a de Polignac number, because 31223000223 - 2⁸ = 31222999967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31223000196 and 31223000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2169253 + ... + 2183598.

It is an arithmetic number, because the mean of its divisors is an integer number (3763040554).

Almost surely, 2^31223000223 is an apocalyptic number.

31223000223 is a deficient number, since it is larger than the sum of its proper divisors (13933486425).

31223000223 is a wasteful number, since it uses less digits than its factorization.

31223000223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353654 (or 4353651 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31223000223 its reverse (32200032213), we get a palindrome (63423032436).

The spelling of 31223000223 in words is "thirty-one billion, two hundred twenty-three million, two hundred twenty-three", and thus it is an aban number.