31241121044 has 48 divisors (see below), whose sum is σ = 64761742080. Its totient is φ = 12902373120.

The previous prime is 31241120993. The next prime is 31241121047. The reversal of 31241121044 is 44012114213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31241121047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386129 + ... + 459975.

It is an arithmetic number, because the mean of its divisors is an integer number (1349202960).

Almost surely, 2^31241121044 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 31241121044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32380871040).

31241121044 is an abundant number, since it is smaller than the sum of its proper divisors (33520621036).

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

31241121044 is a wasteful number, since it uses less digits than its factorization.

31241121044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74408 (or 74406 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 31241121044 its reverse (44012114213), we get a palindrome (75253235257).

The spelling of 31241121044 in words is "thirty-one billion, two hundred forty-one million, one hundred twenty-one thousand, forty-four".