31350470216 has 32 divisors (see below), whose sum is σ = 63353215800. Its totient is φ = 14458160640.

The previous prime is 31350470161. The next prime is 31350470227. The reversal of 31350470216 is 61207405313.

It can be written as a sum of positive squares in 4 ways, for example, as 30816398116 + 534072100 = 175546^2 + 23110^2 .

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, 17126 + ... + 250986.

Almost surely, 2^31350470216 is an apocalyptic number.

It is an amenable number.

31350470216 is an abundant number, since it is smaller than the sum of its proper divisors (32002745584).

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

31350470216 is a wasteful number, since it uses less digits than its factorization.

31350470216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235169 (or 235165 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

Adding to 31350470216 its reverse (61207405313), we get a palindrome (92557875529).

The spelling of 31350470216 in words is "thirty-one billion, three hundred fifty million, four hundred seventy thousand, two hundred sixteen".