12631422173 has 8 divisors (see below), whose sum is σ = 12717154008. Its totient is φ = 12545836864.

The previous prime is 12631422169. The next prime is 12631422191. The reversal of 12631422173 is 37122413621.

It can be written as a sum of positive squares in 4 ways, for example, as 1708249 + 12629713924 = 1307^2 + 112382^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12631422173 - 2² = 12631422169 is a prime.

It is a super-2 number, since 2×12631422173² (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 (12631422113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139211 + ... + 211287.

It is an arithmetic number, because the mean of its divisors is an integer number (1589644251).

Almost surely, 2^12631422173 is an apocalyptic number.

It is an amenable number.

12631422173 is a deficient number, since it is larger than the sum of its proper divisors (85731835).

12631422173 is a wasteful number, since it uses less digits than its factorization.

12631422173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73263.

The product of its digits is 12096, while the sum is 32.

Adding to 12631422173 its reverse (37122413621), we get a palindrome (49753835794).

The spelling of 12631422173 in words is "twelve billion, six hundred thirty-one million, four hundred twenty-two thousand, one hundred seventy-three".