31985834086 has 4 divisors (see below), whose sum is σ = 47978751132. Its totient is φ = 15992917042.

The previous prime is 31985834077. The next prime is 31985834123. The reversal of 31985834086 is 68043858913.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7996458520 + ... + 7996458523.

It is an arithmetic number, because the mean of its divisors is an integer number (11994687783).

Almost surely, 2^31985834086 is an apocalyptic number.

31985834086 is a deficient number, since it is larger than the sum of its proper divisors (15992917046).

31985834086 is a wasteful number, since it uses less digits than its factorization.

31985834086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15992917045.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 31985834086 in words is "thirty-one billion, nine hundred eighty-five million, eight hundred thirty-four thousand, eighty-six".