31224143223 has 32 divisors (see below), whose sum is σ = 56932915200. Its totient is φ = 16469876448.

The previous prime is 31224143213. The next prime is 31224143239. The reversal of 31224143223 is 32234142213.

31224143223 is a `hidden beast` number, since 3 + 1 + 22 + 414 + 3 + 223 = 666.

It is not a de Polignac number, because 31224143223 - 2⁴ = 31224143207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31224143213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6351663 + ... + 6356576.

It is an arithmetic number, because the mean of its divisors is an integer number (1779153600).

Almost surely, 2^31224143223 is an apocalyptic number.

31224143223 is a deficient number, since it is larger than the sum of its proper divisors (25708771977).

31224143223 is a wasteful number, since it uses less digits than its factorization.

31224143223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12708268 (or 12708262 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 31224143223 its reverse (32234142213), we get a palindrome (63458285436).

The spelling of 31224143223 in words is "thirty-one billion, two hundred twenty-four million, one hundred forty-three thousand, two hundred twenty-three".