12309055631 has 2 divisors, whose sum is σ = 12309055632. Its totient is φ = 12309055630.

The previous prime is 12309055609. The next prime is 12309055691. The reversal of 12309055631 is 13655090321.

It is a weak prime.

It is an emirp because it is prime and its reverse (13655090321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12309055631 - 2¹⁸ = 12308793487 is a prime.

It is a super-2 number, since 2×12309055631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12309055591 and 12309055600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12309055691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6154527815 + 6154527816.

It is an arithmetic number, because the mean of its divisors is an integer number (6154527816).

Almost surely, 2^12309055631 is an apocalyptic number.

12309055631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12309055631 is an equidigital number, since it uses as much as digits as its factorization.

12309055631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 35.

The spelling of 12309055631 in words is "twelve billion, three hundred nine million, fifty-five thousand, six hundred thirty-one".