16320131 has 8 divisors (see below), whose sum is σ = 16866144. Its totient is φ = 15783040.

The previous prime is 16320121. The next prime is 16320137. The reversal of 16320131 is 13102361.

16320131 = 444² + 445² + ... + 514².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16320131 is a prime.

It is a super-2 number, since 2×16320131² = 532693351714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16320137) 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 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (2108268).

Almost surely, 2^16320131 is an apocalyptic number.

16320131 is a deficient number, since it is larger than the sum of its proper divisors (546013).

16320131 is an equidigital number, since it uses as much as digits as its factorization.

16320131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 16320131 is about 4039.8181889783. The cubic root of 16320131 is about 253.6537069012.

Adding to 16320131 its reverse (13102361), we get a palindrome (29422492).

The spelling of 16320131 in words is "sixteen million, three hundred twenty thousand, one hundred thirty-one".