231108393012 has 96 divisors (see below), whose sum is σ = 636314025984. Its totient is φ = 63886406400.

The previous prime is 231108392987. The next prime is 231108393053. The reversal of 231108393012 is 210393801132.

It is a super-3 number, since 3×231108393012³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16848837 + ... + 16862547.

It is an arithmetic number, because the mean of its divisors is an integer number (6628271104).

Almost surely, 2^231108393012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231108393012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318157012992).

231108393012 is an abundant number, since it is smaller than the sum of its proper divisors (405205632972).

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

231108393012 is a wasteful number, since it uses less digits than its factorization.

231108393012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20229 (or 20227 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 231108393012 in words is "two hundred thirty-one billion, one hundred eight million, three hundred ninety-three thousand, twelve".