12331101431 has 4 divisors (see below), whose sum is σ = 13452110664. Its totient is φ = 11210092200.

The previous prime is 12331101347. The next prime is 12331101451. The reversal of 12331101431 is 13410113321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12331101431 is a prime.

It is a super-2 number, since 2×12331101431² (a number of 21 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 (12331101451) 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, 560504600 + ... + 560504621.

It is an arithmetic number, because the mean of its divisors is an integer number (3363027666).

Almost surely, 2^12331101431 is an apocalyptic number.

12331101431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12331101431 is a deficient number, since it is larger than the sum of its proper divisors (1121009233).

12331101431 is a wasteful number, since it uses less digits than its factorization.

12331101431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121009232.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12331101431 its reverse (13410113321), we get a palindrome (25741214752).

The spelling of 12331101431 in words is "twelve billion, three hundred thirty-one million, one hundred one thousand, four hundred thirty-one".