31223324 has 36 divisors (see below), whose sum is σ = 62026944. Its totient is φ = 13728000.

The previous prime is 31223303. The next prime is 31223333. The reversal of 31223324 is 42332213.

It is a junction number, because it is equal to n+sod(n) for n = 31223296 and 31223305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13964 + ... + 16044.

Almost surely, 2^31223324 is an apocalyptic number.

It is an amenable number.

31223324 is a deficient number, since it is larger than the sum of its proper divisors (30803620).

31223324 is a wasteful number, since it uses less digits than its factorization.

31223324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2125 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 31223324 is about 5587.7834603714. The cubic root of 31223324 is about 314.8906112153.

Adding to 31223324 its reverse (42332213), we get a palindrome (73555537).

Subtracting 31223324 from its reverse (42332213), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 3122 and 3324, that added together give a palindrome (6446).

The spelling of 31223324 in words is "thirty-one million, two hundred twenty-three thousand, three hundred twenty-four".