12002431111 has 4 divisors (see below), whose sum is σ = 13093561224. Its totient is φ = 10911301000.

The previous prime is 12002431109. The next prime is 12002431117. The reversal of 12002431111 is 11113420021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12002431111 - 2¹ = 12002431109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002431117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545565040 + ... + 545565061.

It is an arithmetic number, because the mean of its divisors is an integer number (3273390306).

Almost surely, 2^12002431111 is an apocalyptic number.

12002431111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12002431111 is a deficient number, since it is larger than the sum of its proper divisors (1091130113).

12002431111 is a wasteful number, since it uses less digits than its factorization.

12002431111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091130112.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12002431111 its reverse (11113420021), we get a palindrome (23115851132).

The spelling of 12002431111 in words is "twelve billion, two million, four hundred thirty-one thousand, one hundred eleven".