31143303040444 has 192 divisors, whose sum is σ = 66140296814592. Its totient is φ = 12548796825600.

The previous prime is 31143303040441. The next prime is 31143303040489. The reversal of 31143303040444 is 44404030334113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143303040441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11721226764 + ... + 11721229420.

It is an arithmetic number, because the mean of its divisors is an integer number (344480712576).

Almost surely, 2^{31143303040444} 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 31143303040444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33070148407296).

31143303040444 is an abundant number, since it is smaller than the sum of its proper divisors (34996993774148).

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

31143303040444 is a wasteful number, since it uses less digits than its factorization.

31143303040444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 31143303040444 its reverse (44404030334113), we get a palindrome (75547333374557).

The spelling of 31143303040444 in words is "thirty-one trillion, one hundred forty-three billion, three hundred three million, forty thousand, four hundred forty-four".