31223044443332 has 96 divisors (see below), whose sum is σ = 65107422874368. Its totient is φ = 12823406313984.

The previous prime is 31223044443317. The next prime is 31223044443337. The reversal of 31223044443332 is 23334444032213.

It is not an unprimeable number, because it can be changed into a prime (31223044443337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18363338 + ... + 19991454.

It is an arithmetic number, because the mean of its divisors is an integer number (678202321608).

Almost surely, 2^{31223044443332} 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 31223044443332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32553711437184).

31223044443332 is an abundant number, since it is smaller than the sum of its proper divisors (33884378431036).

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

31223044443332 is a wasteful number, since it uses less digits than its factorization.

31223044443332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628445 (or 1628443 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 38.

Adding to 31223044443332 its reverse (23334444032213), we get a palindrome (54557488475545).

The spelling of 31223044443332 in words is "thirty-one trillion, two hundred twenty-three billion, forty-four million, four hundred forty-three thousand, three hundred thirty-two".