12873631 has 4 divisors (see below), whose sum is σ = 13187664. Its totient is φ = 12559600.

The previous prime is 12873611. The next prime is 12873673. The reversal of 12873631 is 13637821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13637821 = 149 ⋅91529.

It is a cyclic number.

It is not a de Polignac number, because 12873631 - 2⁵ = 12873599 is a prime.

It is a super-2 number, since 2×12873631² = 331460750248322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12873593 and 12873602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12873611) 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, 156955 + ... + 157036.

It is an arithmetic number, because the mean of its divisors is an integer number (3296916).

Almost surely, 2^12873631 is an apocalyptic number.

12873631 is a deficient number, since it is larger than the sum of its proper divisors (314033).

12873631 is an equidigital number, since it uses as much as digits as its factorization.

12873631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314032.

The product of its digits is 6048, while the sum is 31.

The square root of 12873631 is about 3587.9842530312. The cubic root of 12873631 is about 234.3690999641.

The spelling of 12873631 in words is "twelve million, eight hundred seventy-three thousand, six hundred thirty-one".