31700378116 has 27 divisors (see below), whose sum is σ = 60984915733. Its totient is φ = 14407482320.

The previous prime is 31700378081. The next prime is 31700378141. The reversal of 31700378116 is 61187300713.

It is a happy number.

The square root of 31700378116 is 178046.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13879196100 + 17821182016 = 117810^2 + 133496^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3912966 + ... + 3921058.

Almost surely, 2^31700378116 is an apocalyptic number.

31700378116 is the 178046-th square number.

It is an amenable number.

31700378116 is a deficient number, since it is larger than the sum of its proper divisors (29284537617).

31700378116 is an frugal number, since it uses more digits than its factorization.

31700378116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16212 (or 8106 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

Adding to 31700378116 its reverse (61187300713), we get a palindrome (92887678829).

The spelling of 31700378116 in words is "thirty-one billion, seven hundred million, three hundred seventy-eight thousand, one hundred sixteen".