19824131 has 2 divisors, whose sum is σ = 19824132. Its totient is φ = 19824130.

The previous prime is 19824121. The next prime is 19824143. The reversal of 19824131 is 13142891.

It is a weak prime.

It is an emirp because it is prime and its reverse (13142891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19824131 - 2¹⁰ = 19823107 is a prime.

It is a super-2 number, since 2×19824131² = 785992339810322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 19824094 and 19824103.

It is not a weakly prime, because it can be changed into another prime (19824121) 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 as a sum of consecutive naturals, namely, 9912065 + 9912066.

It is an arithmetic number, because the mean of its divisors is an integer number (9912066).

Almost surely, 2^19824131 is an apocalyptic number.

19824131 is a deficient number, since it is larger than the sum of its proper divisors (1).

19824131 is an equidigital number, since it uses as much as digits as its factorization.

19824131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 19824131 is about 4452.4297860831. The cubic root of 19824131 is about 270.6437815496.

The spelling of 19824131 in words is "nineteen million, eight hundred twenty-four thousand, one hundred thirty-one".