31441024240 has 80 divisors (see below), whose sum is σ = 73768135680. Its totient is φ = 12461783040.

The previous prime is 31441024213. The next prime is 31441024283. The reversal of 31441024240 is 4242014413.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11469270 + ... + 11472010.

It is an arithmetic number, because the mean of its divisors is an integer number (922101696).

Almost surely, 2^31441024240 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 31441024240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36884067840).

31441024240 is an abundant number, since it is smaller than the sum of its proper divisors (42327111440).

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

31441024240 is a wasteful number, since it uses less digits than its factorization.

31441024240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010 (or 4004 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 31441024240 its reverse (4242014413), we get a palindrome (35683038653).

The spelling of 31441024240 in words is "thirty-one billion, four hundred forty-one million, twenty-four thousand, two hundred forty".