12631719 has 4 divisors (see below), whose sum is σ = 16842296. Its totient is φ = 8421144.

The previous prime is 12631699. The next prime is 12631721. The reversal of 12631719 is 91713621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12631719 - 2¹⁵ = 12598951 is a prime.

It is a super-2 number, since 2×12631719² = 319120649789922, which 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 (12631769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2105284 + ... + 2105289.

It is an arithmetic number, because the mean of its divisors is an integer number (4210574).

Almost surely, 2^12631719 is an apocalyptic number.

12631719 is a deficient number, since it is larger than the sum of its proper divisors (4210577).

12631719 is an equidigital number, since it uses as much as digits as its factorization.

12631719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210576.

The product of its digits is 2268, while the sum is 30.

The square root of 12631719 is about 3554.1129695045. The cubic root of 12631719 is about 232.8917755851.

The spelling of 12631719 in words is "twelve million, six hundred thirty-one thousand, seven hundred nineteen".