31301104042240 has 144 divisors (see below), whose sum is σ = 75244665787200. Its totient is φ = 12475641651200.

The previous prime is 31301104042231. The next prime is 31301104042253. The reversal of 31301104042240 is 4224040110313.

It is a super-2 number, since 2×31301104042240² (a number of 28 digits) contains 22 as substring.

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, 418992411 + ... + 419067109.

It is an arithmetic number, because the mean of its divisors is an integer number (522532401300).

Almost surely, 2^{31301104042240} 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 31301104042240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37622332893600).

31301104042240 is an abundant number, since it is smaller than the sum of its proper divisors (43943561744960).

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

31301104042240 is an equidigital number, since it uses as much as digits as its factorization.

31301104042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75888 (or 75874 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31301104042240 its reverse (4224040110313), we get a palindrome (35525144152553).

The spelling of 31301104042240 in words is "thirty-one trillion, three hundred one billion, one hundred four million, forty-two thousand, two hundred forty".