16431017 has 2 divisors, whose sum is σ = 16431018. Its totient is φ = 16431016.

The previous prime is 16430989. The next prime is 16431043. The reversal of 16431017 is 71013461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11182336 + 5248681 = 3344^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 16431017 - 2⁸ = 16430761 is a prime.

It is a Chen prime.

It is equal to p_1057028 and since 16431017 and 1057028 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 16430983 and 16431001.

It is not a weakly prime, because it can be changed into another prime (16431097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8215508 + 8215509.

It is an arithmetic number, because the mean of its divisors is an integer number (8215509).

Almost surely, 2^16431017 is an apocalyptic number.

It is an amenable number.

16431017 is a deficient number, since it is larger than the sum of its proper divisors (1).

16431017 is an equidigital number, since it uses as much as digits as its factorization.

16431017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 16431017 is about 4053.5190883971. The cubic root of 16431017 is about 254.2268882235.

Adding to 16431017 its reverse (71013461), we get a palindrome (87444478).

The spelling of 16431017 in words is "sixteen million, four hundred thirty-one thousand, seventeen".