31317580304140 has 288 divisors, whose sum is σ = 75317979340800. Its totient is φ = 10918797926400.

The previous prime is 31317580304099. The next prime is 31317580304167. The reversal of 31317580304140 is 4140308571313.

It is a super-2 number, since 2×31317580304140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31317580304093 and 31317580304102.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 721598161 + ... + 721641559.

It is an arithmetic number, because the mean of its divisors is an integer number (261520761600).

Almost surely, 2^{31317580304140} 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 31317580304140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37658989670400).

31317580304140 is an abundant number, since it is smaller than the sum of its proper divisors (44000399036660).

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

31317580304140 is a wasteful number, since it uses less digits than its factorization.

31317580304140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43633 (or 43618 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 31317580304140 its reverse (4140308571313), we get a palindrome (35457888875453).

The spelling of 31317580304140 in words is "thirty-one trillion, three hundred seventeen billion, five hundred eighty million, three hundred four thousand, one hundred forty".