12312011196 has 72 divisors (see below), whose sum is σ = 31907859984. Its totient is φ = 4000546560.

The previous prime is 12312011137. The next prime is 12312011203. The reversal of 12312011196 is 69111021321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2245210 + ... + 2250686.

It is an arithmetic number, because the mean of its divisors is an integer number (443164722).

Almost surely, 2^12312011196 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 12312011196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15953929992).

12312011196 is an abundant number, since it is smaller than the sum of its proper divisors (19595848788).

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

12312011196 is a wasteful number, since it uses less digits than its factorization.

12312011196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7051 (or 7046 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 12312011196 in words is "twelve billion, three hundred twelve million, eleven thousand, one hundred ninety-six".