31224030304 has 96 divisors (see below), whose sum is σ = 67052482560. Its totient is φ = 14258073600.

The previous prime is 31224030281. The next prime is 31224030311. The reversal of 31224030304 is 40303042213.

It is a happy number.

It is a super-2 number, since 2×31224030304² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5104752 + ... + 5110864.

It is an arithmetic number, because the mean of its divisors is an integer number (698463360).

Almost surely, 2^31224030304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31224030304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33526241280).

31224030304 is an abundant number, since it is smaller than the sum of its proper divisors (35828452256).

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

31224030304 is a wasteful number, since it uses less digits than its factorization.

31224030304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31224030304 its reverse (40303042213), we get a palindrome (71527072517).

The spelling of 31224030304 in words is "thirty-one billion, two hundred twenty-four million, thirty thousand, three hundred four".