16427331 has 12 divisors (see below), whose sum is σ = 23808720. Its totient is φ = 10914480.

The previous prime is 16427329. The next prime is 16427351. The reversal of 16427331 is 13372461.

It is not a de Polignac number, because 16427331 - 2¹ = 16427329 is a prime.

It is a super-2 number, since 2×16427331² = 539714407567122, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16427295 and 16427304.

It is not an unprimeable number, because it can be changed into a prime (16427351) 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 11 ways as a sum of consecutive naturals, for example, 136 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (1984060).

Almost surely, 2^16427331 is an apocalyptic number.

16427331 is a deficient number, since it is larger than the sum of its proper divisors (7381389).

16427331 is a wasteful number, since it uses less digits than its factorization.

16427331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186 (or 6183 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 16427331 is about 4053.0643962316. The cubic root of 16427331 is about 254.2078764080.

Adding to 16427331 its reverse (13372461), we get a palindrome (29799792).

It can be divided in two parts, 164 and 27331, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 16427331 in words is "sixteen million, four hundred twenty-seven thousand, three hundred thirty-one".