31000648066 has 16 divisors (see below), whose sum is σ = 47180242368. Its totient is φ = 15274126000.

The previous prime is 31000648051. The next prime is 31000648087. The reversal of 31000648066 is 66084600013.

It is a super-2 number, since 2×31000648066² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224841 + ... + 335491.

It is an arithmetic number, because the mean of its divisors is an integer number (2948765148).

Almost surely, 2^31000648066 is an apocalyptic number.

31000648066 is a deficient number, since it is larger than the sum of its proper divisors (16179594302).

31000648066 is a wasteful number, since it uses less digits than its factorization.

31000648066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112697.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 31000648066 in words is "thirty-one billion, six hundred forty-eight thousand, sixty-six".