16412531 has 4 divisors (see below), whose sum is σ = 17377992. Its totient is φ = 15447072.

The previous prime is 16412519. The next prime is 16412533. The reversal of 16412531 is 13521461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16412531 - 2⁶ = 16412467 is a prime.

It is a super-2 number, since 2×16412531² = 538742347651922, 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 = 16412497 and 16412506.

It is not an unprimeable number, because it can be changed into a prime (16412533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482705 + ... + 482738.

It is an arithmetic number, because the mean of its divisors is an integer number (4344498).

Almost surely, 2^16412531 is an apocalyptic number.

16412531 is a deficient number, since it is larger than the sum of its proper divisors (965461).

16412531 is an equidigital number, since it uses as much as digits as its factorization.

16412531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965460.

The product of its digits is 720, while the sum is 23.

The square root of 16412531 is about 4051.2382057835. The cubic root of 16412531 is about 254.1315116596.

Adding to 16412531 its reverse (13521461), we get a palindrome (29933992).

The spelling of 16412531 in words is "sixteen million, four hundred twelve thousand, five hundred thirty-one".