12423173291 has 2 divisors, whose sum is σ = 12423173292. Its totient is φ = 12423173290.

The previous prime is 12423173263. The next prime is 12423173293. The reversal of 12423173291 is 19237132421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423173291 is a prime.

Together with 12423173293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12423173293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211586645 + 6211586646.

It is an arithmetic number, because the mean of its divisors is an integer number (6211586646).

Almost surely, 2^12423173291 is an apocalyptic number.

12423173291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423173291 is an equidigital number, since it uses as much as digits as its factorization.

12423173291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The spelling of 12423173291 in words is "twelve billion, four hundred twenty-three million, one hundred seventy-three thousand, two hundred ninety-one".