16983431 has 2 divisors, whose sum is σ = 16983432. Its totient is φ = 16983430.

The previous prime is 16983419. The next prime is 16983433. The reversal of 16983431 is 13438961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16983431 - 2⁶ = 16983367 is a prime.

It is a super-2 number, since 2×16983431² = 576873857063522, which contains 22 as substring.

Together with 16983433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16983391 and 16983400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16983433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8491715 + 8491716.

It is an arithmetic number, because the mean of its divisors is an integer number (8491716).

Almost surely, 2^16983431 is an apocalyptic number.

16983431 is a deficient number, since it is larger than the sum of its proper divisors (1).

16983431 is an equidigital number, since it uses as much as digits as its factorization.

16983431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 16983431 is about 4121.0958494070. The cubic root of 16983431 is about 257.0445955103.

The spelling of 16983431 in words is "sixteen million, nine hundred eighty-three thousand, four hundred thirty-one".