31104300240 has 640 divisors, whose sum is σ = 127521838080. Its totient is φ = 6890323968.

The previous prime is 31104300173. The next prime is 31104300251. The reversal of 31104300240 is 4200340113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10977864 + ... + 10980696.

It is an arithmetic number, because the mean of its divisors is an integer number (199252872).

Almost surely, 2^31104300240 is an apocalyptic number.

31104300240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31104300240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63760919040).

31104300240 is an abundant number, since it is smaller than the sum of its proper divisors (96417537840).

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

31104300240 is a wasteful number, since it uses less digits than its factorization.

31104300240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2896 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31104300240 its reverse (4200340113), we get a palindrome (35304640353).

The spelling of 31104300240 in words is "thirty-one billion, one hundred four million, three hundred thousand, two hundred forty".