31830486765 has 128 divisors (see below), whose sum is σ = 64903348224. Its totient is φ = 12938016000.

The previous prime is 31830486731. The next prime is 31830486893. The reversal of 31830486765 is 56768403813.

It is not a de Polignac number, because 31830486765 - 2⁸ = 31830486509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10741174 + ... + 10744136.

It is an arithmetic number, because the mean of its divisors is an integer number (507057408).

Almost surely, 2^31830486765 is an apocalyptic number.

31830486765 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31830486765 is an abundant number, since it is smaller than the sum of its proper divisors (33072861459).

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

31830486765 is a wasteful number, since it uses less digits than its factorization.

31830486765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191.

The product of its (nonzero) digits is 2903040, while the sum is 51.

It can be divided in two parts, 3183048 and 6765, that added together give a palindrome (3189813).

The spelling of 31830486765 in words is "thirty-one billion, eight hundred thirty million, four hundred eighty-six thousand, seven hundred sixty-five".