31224244420000 has 240 divisors, whose sum is σ = 81388485097920. Its totient is φ = 11747270144000.

The previous prime is 31224244419971. The next prime is 31224244420121. The reversal of 31224244420000 is 2444242213.

It is a super-2 number, since 2×31224244420000² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 530030547 + ... + 530089453.

It is an arithmetic number, because the mean of its divisors is an integer number (339118687908).

Almost surely, 2^{31224244420000} 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 31224244420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40694242548960).

31224244420000 is an abundant number, since it is smaller than the sum of its proper divisors (50164240677920).

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

31224244420000 is a wasteful number, since it uses less digits than its factorization.

31224244420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60513 (or 60490 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 31224244420000 its reverse (2444242213), we get a palindrome (31226688662213).

The spelling of 31224244420000 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred forty-four million, four hundred twenty thousand".