31316746839980 has 96 divisors (see below), whose sum is σ = 76291691546112. Its totient is φ = 10575568396800.

The previous prime is 31316746839979. The next prime is 31316746840021. The reversal of 31316746839980 is 8993864761313.

It is a self number, because there is not a number n which added to its sum of digits gives 31316746839980.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74934800 + ... + 75351560.

It is an arithmetic number, because the mean of its divisors is an integer number (794705120272).

Almost surely, 2^{31316746839980} 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 31316746839980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38145845773056).

31316746839980 is an abundant number, since it is smaller than the sum of its proper divisors (44974944706132).

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

31316746839980 is a wasteful number, since it uses less digits than its factorization.

31316746839980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424855 (or 424853 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 68.

The spelling of 31316746839980 in words is "thirty-one trillion, three hundred sixteen billion, seven hundred forty-six million, eight hundred thirty-nine thousand, nine hundred eighty".