16906831 has 2 divisors, whose sum is σ = 16906832. Its totient is φ = 16906830.

The previous prime is 16906829. The next prime is 16906867. The reversal of 16906831 is 13860961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16906831 - 2¹ = 16906829 is a prime.

It is a super-2 number, since 2×16906831² = 571681868925122, which contains 22 as substring.

Together with 16906829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16906031) 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, 8453415 + 8453416.

It is an arithmetic number, because the mean of its divisors is an integer number (8453416).

Almost surely, 2^16906831 is an apocalyptic number.

16906831 is a deficient number, since it is larger than the sum of its proper divisors (1).

16906831 is an equidigital number, since it uses as much as digits as its factorization.

16906831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 16906831 is about 4111.7917019227. The cubic root of 16906831 is about 256.6575655025.

The spelling of 16906831 in words is "sixteen million, nine hundred six thousand, eight hundred thirty-one".