31499894686 has 24 divisors (see below), whose sum is σ = 53703544104. Its totient is φ = 13773229200.

The previous prime is 31499894683. The next prime is 31499894687. The reversal of 31499894686 is 68649899413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31499894683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1668640 + ... + 1687411.

It is an arithmetic number, because the mean of its divisors is an integer number (2237647671).

Almost surely, 2^31499894686 is an apocalyptic number.

31499894686 is a deficient number, since it is larger than the sum of its proper divisors (22203649418).

31499894686 is a wasteful number, since it uses less digits than its factorization.

31499894686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356104 (or 3356085 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 67.

The spelling of 31499894686 in words is "thirty-one billion, four hundred ninety-nine million, eight hundred ninety-four thousand, six hundred eighty-six".