31244342212000 has 96 divisors (see below), whose sum is σ = 77066056987920. Its totient is φ = 12449107148800.

The previous prime is 31244342211967. The next prime is 31244342212007. The reversal of 31244342212000 is 21224344213.

It can be written as a sum of positive squares in 8 ways, for example, as 11212666555024 + 20031675656976 = 3348532^2 + 4475676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31244342212000.

It is not an unprimeable number, because it can be changed into a prime (31244342212007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14168665 + ... + 16224664.

Almost surely, 2^{31244342212000} is an apocalyptic number.

It is an amenable number.

31244342212000 is an abundant number, since it is smaller than the sum of its proper divisors (45821714775920).

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

31244342212000 is a wasteful number, since it uses less digits than its factorization.

31244342212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30393611 (or 30393593 counting only the distinct ones).

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

Adding to 31244342212000 its reverse (21224344213), we get a palindrome (31265566556213).

The spelling of 31244342212000 in words is "thirty-one trillion, two hundred forty-four billion, three hundred forty-two million, two hundred twelve thousand".