12131719 has 8 divisors (see below), whose sum is σ = 12467840. Its totient is φ = 11798136.

The previous prime is 12131711. The next prime is 12131759. The reversal of 12131719 is 91713121.

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 12131719 - 2³ = 12131711 is a prime.

It is a super-2 number, since 2×12131719² = 294357211789922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131693 and 12131702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131711) 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 7 ways as a sum of consecutive naturals, for example, 12742 + ... + 13660.

It is an arithmetic number, because the mean of its divisors is an integer number (1558480).

Almost surely, 2^12131719 is an apocalyptic number.

12131719 is a deficient number, since it is larger than the sum of its proper divisors (336121).

12131719 is an equidigital number, since it uses as much as digits as its factorization.

12131719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269.

The product of its digits is 378, while the sum is 25.

The square root of 12131719 is about 3483.0617278481. The cubic root of 12131719 is about 229.7774722318. Note that the first 3 decimals are identical.

The spelling of 12131719 in words is "twelve million, one hundred thirty-one thousand, seven hundred nineteen".