31610664678 has 32 divisors (see below), whose sum is σ = 63930827232. Its totient is φ = 10418912000.

The previous prime is 31610664607. The next prime is 31610664697. The reversal of 31610664678 is 87646601613.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434698 + ... + 502178.

It is an arithmetic number, because the mean of its divisors is an integer number (1997838351).

Almost surely, 2^31610664678 is an apocalyptic number.

31610664678 is an abundant number, since it is smaller than the sum of its proper divisors (32320162554).

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

31610664678 is a wasteful number, since it uses less digits than its factorization.

31610664678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68360.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 31610664678 in words is "thirty-one billion, six hundred ten million, six hundred sixty-four thousand, six hundred seventy-eight".