12331311109 has 4 divisors (see below), whose sum is σ = 13279873516. Its totient is φ = 11382748704.

The previous prime is 12331311061. The next prime is 12331311119. The reversal of 12331311109 is 90111313321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1412106084 + 10919205025 = 37578^2 + 104495^2 .

It is a cyclic number.

It is not a de Polignac number, because 12331311109 - 2¹¹ = 12331309061 is a prime.

It is a super-2 number, since 2×12331311109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331311119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474281184 + ... + 474281209.

It is an arithmetic number, because the mean of its divisors is an integer number (3319968379).

Almost surely, 2^12331311109 is an apocalyptic number.

It is an amenable number.

12331311109 is a deficient number, since it is larger than the sum of its proper divisors (948562407).

12331311109 is an equidigital number, since it uses as much as digits as its factorization.

12331311109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948562406.

The product of its (nonzero) digits is 486, while the sum is 25.

The spelling of 12331311109 in words is "twelve billion, three hundred thirty-one million, three hundred eleven thousand, one hundred nine".