31130165445560 has 128 divisors (see below), whose sum is σ = 74302180761600. Its totient is φ = 11697624115200.

The previous prime is 31130165445553. The next prime is 31130165445583. The reversal of 31130165445560 is 6554456103113.

It is a congruent number.

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, 851486561 + ... + 851523119.

It is an arithmetic number, because the mean of its divisors is an integer number (580485787200).

Almost surely, 2^{31130165445560} 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 31130165445560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37151090380800).

31130165445560 is an abundant number, since it is smaller than the sum of its proper divisors (43172015316040).

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

31130165445560 is a wasteful number, since it uses less digits than its factorization.

31130165445560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38901 (or 38897 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 31130165445560 in words is "thirty-one trillion, one hundred thirty billion, one hundred sixty-five million, four hundred forty-five thousand, five hundred sixty".