12311140434431 has 32 divisors (see below), whose sum is σ = 13129631662080. Its totient is φ = 11526929013600.

The previous prime is 12311140434419. The next prime is 12311140434443. The reversal of 12311140434431 is 13443404111321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12311140434419) and next prime (12311140434443).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311140434431 is a prime.

It is a super-2 number, since 2×12311140434431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311140434401) 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 31 ways as a sum of consecutive naturals, for example, 31143440 + ... + 31536266.

It is an arithmetic number, because the mean of its divisors is an integer number (410300989440).

Almost surely, 2^{12311140434431} is an apocalyptic number.

12311140434431 is a deficient number, since it is larger than the sum of its proper divisors (818491227649).

12311140434431 is a wasteful number, since it uses less digits than its factorization.

12311140434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393195.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 12311140434431 its reverse (13443404111321), we get a palindrome (25754544545752).

The spelling of 12311140434431 in words is "twelve trillion, three hundred eleven billion, one hundred forty million, four hundred thirty-four thousand, four hundred thirty-one".