12331101987 has 20 divisors (see below), whose sum is σ = 19221430800. Its totient is φ = 7863310224.

The previous prime is 12331101983. The next prime is 12331102009. The reversal of 12331101987 is 78910113321.

It is not a de Polignac number, because 12331101987 - 2² = 12331101983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12331101983) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 3307612 + ... + 3311337.

It is an arithmetic number, because the mean of its divisors is an integer number (961071540).

Almost surely, 2^12331101987 is an apocalyptic number.

12331101987 is a deficient number, since it is larger than the sum of its proper divisors (6890328813).

12331101987 is an equidigital number, since it uses as much as digits as its factorization.

12331101987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618984 (or 6618975 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 12331101987 in words is "twelve billion, three hundred thirty-one million, one hundred one thousand, nine hundred eighty-seven".