31305510066 has 16 divisors (see below), whose sum is σ = 64138118688. Its totient is φ = 10180653600.

The previous prime is 31305510043. The next prime is 31305510139. The reversal of 31305510066 is 66001550313.

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, 63628840 + ... + 63629331.

It is an arithmetic number, because the mean of its divisors is an integer number (4008632418).

Almost surely, 2^31305510066 is an apocalyptic number.

31305510066 is an abundant number, since it is smaller than the sum of its proper divisors (32832608622).

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

31305510066 is a wasteful number, since it uses less digits than its factorization.

31305510066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127258217.

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 31305510066 in words is "thirty-one billion, three hundred five million, five hundred ten thousand, sixty-six".