31144044430000 has 100 divisors (see below), whose sum is σ = 75408427210248. Its totient is φ = 12456695680000.

The previous prime is 31144044429997. The next prime is 31144044430039. The reversal of 31144044430000 is 3444044113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

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 19 ways as a sum of consecutive naturals, for example, 144001944 + ... + 144218056.

Almost surely, 2^{31144044430000} 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 31144044430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37704213605124).

31144044430000 is an abundant number, since it is smaller than the sum of its proper divisors (44264382780248).

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

31144044430000 is a wasteful number, since it uses less digits than its factorization.

31144044430000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230552 (or 230531 counting only the distinct ones).

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

Adding to 31144044430000 its reverse (3444044113), we get a palindrome (31147488474113).

The spelling of 31144044430000 in words is "thirty-one trillion, one hundred forty-four billion, forty-four million, four hundred thirty thousand".