16231601 has 2 divisors, whose sum is σ = 16231602. Its totient is φ = 16231600.

The previous prime is 16231573. The next prime is 16231603. The reversal of 16231601 is 10613261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 30976 = 4025^2 + 176^2 .

It is an emirp because it is prime and its reverse (10613261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16231601 - 2¹⁴ = 16215217 is a prime.

It is a Sophie Germain prime.

Together with 16231603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16231603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115800 + 8115801.

It is an arithmetic number, because the mean of its divisors is an integer number (8115801).

Almost surely, 2^16231601 is an apocalyptic number.

It is an amenable number.

16231601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231601 is an equidigital number, since it uses as much as digits as its factorization.

16231601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 16231601 is about 4028.8461127226. The cubic root of 16231601 is about 253.1942193666.

Adding to 16231601 its reverse (10613261), we get a palindrome (26844862).

The spelling of 16231601 in words is "sixteen million, two hundred thirty-one thousand, six hundred one".