31223442124 has 12 divisors (see below), whose sum is σ = 62446884304. Its totient is φ = 13381475184.

The previous prime is 31223442053. The next prime is 31223442163. The reversal of 31223442124 is 42124432213.

31223442124 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1115122933 = 31223442124 / (3 + 1 + 2 + 2 + 3 + 4 + 4 + 2 + 1 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 31223442092 and 31223442101.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 557561439 + ... + 557561494.

Almost surely, 2^31223442124 is an apocalyptic number.

It is an amenable number.

31223442124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31223442124 is a wasteful number, since it uses less digits than its factorization.

31223442124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115122944 (or 1115122942 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 31223442124 its reverse (42124432213), we get a palindrome (73347874337).

The spelling of 31223442124 in words is "thirty-one billion, two hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-four".