231612682818 has 32 divisors (see below), whose sum is σ = 505552963392. Its totient is φ = 70155633600.

The previous prime is 231612682813. The next prime is 231612682831. The reversal of 231612682818 is 818286216132.

It is a super-2 number, since 2×231612682818² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231612682813) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 595021 + ... + 904032.

It is an arithmetic number, because the mean of its divisors is an integer number (15798530106).

Almost surely, 2^231612682818 is an apocalyptic number.

231612682818 is an abundant number, since it is smaller than the sum of its proper divisors (273940280574).

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

231612682818 is a wasteful number, since it uses less digits than its factorization.

231612682818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501410.

The product of its digits is 442368, while the sum is 48.

The spelling of 231612682818 in words is "two hundred thirty-one billion, six hundred twelve million, six hundred eighty-two thousand, eight hundred eighteen".