31478497116 has 24 divisors (see below), whose sum is σ = 80127083904. Its totient is φ = 9538938480.

The previous prime is 31478497051. The next prime is 31478497147. The reversal of 31478497116 is 61179487413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119236600 + ... + 119236863.

It is an arithmetic number, because the mean of its divisors is an integer number (3338628496).

Almost surely, 2^31478497116 is an apocalyptic number.

It is an amenable number.

31478497116 is an abundant number, since it is smaller than the sum of its proper divisors (48648586788).

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

31478497116 is a wasteful number, since it uses less digits than its factorization.

31478497116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238473481 (or 238473479 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The spelling of 31478497116 in words is "thirty-one billion, four hundred seventy-eight million, four hundred ninety-seven thousand, one hundred sixteen".