12403210173 has 4 divisors (see below), whose sum is σ = 16537613568. Its totient is φ = 8268806780.

The previous prime is 12403210153. The next prime is 12403210181. The reversal of 12403210173 is 37101230421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12403210173 - 2⁶ = 12403210109 is a prime.

It is a super-2 number, since 2×12403210173² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403210123) 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, 2067201693 + ... + 2067201698.

It is an arithmetic number, because the mean of its divisors is an integer number (4134403392).

Almost surely, 2^12403210173 is an apocalyptic number.

It is an amenable number.

12403210173 is a deficient number, since it is larger than the sum of its proper divisors (4134403395).

12403210173 is an equidigital number, since it uses as much as digits as its factorization.

12403210173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134403394.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 12403210173 its reverse (37101230421), we get a palindrome (49504440594).

The spelling of 12403210173 in words is "twelve billion, four hundred three million, two hundred ten thousand, one hundred seventy-three".