16004131 has 12 divisors (see below), whose sum is σ = 18907560. Its totient is φ = 13428480.

The previous prime is 16004129. The next prime is 16004147. The reversal of 16004131 is 13140061.

It is not a de Polignac number, because 16004131 - 2¹ = 16004129 is a prime.

It is a super-2 number, since 2×16004131² = 512264418130322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16004101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2446 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (1575630).

Almost surely, 2^16004131 is an apocalyptic number.

16004131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16004131 is a deficient number, since it is larger than the sum of its proper divisors (2903429).

16004131 is a wasteful number, since it uses less digits than its factorization.

16004131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8646 (or 8633 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16004131 is about 4000.5163416739. The cubic root of 16004131 is about 252.0058945039.

Adding to 16004131 its reverse (13140061), we get a palindrome (29144192).

The spelling of 16004131 in words is "sixteen million, four thousand, one hundred thirty-one".