31130512116 has 24 divisors (see below), whose sum is σ = 79241303904. Its totient is φ = 9433488480.

The previous prime is 31130512111. The next prime is 31130512123. The reversal of 31130512116 is 61121503113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130512111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117918475 + ... + 117918738.

It is an arithmetic number, because the mean of its divisors is an integer number (3301720996).

Almost surely, 2^31130512116 is an apocalyptic number.

It is an amenable number.

31130512116 is an abundant number, since it is smaller than the sum of its proper divisors (48110791788).

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

31130512116 is a wasteful number, since it uses less digits than its factorization.

31130512116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235837231 (or 235837229 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The spelling of 31130512116 in words is "thirty-one billion, one hundred thirty million, five hundred twelve thousand, one hundred sixteen".