16211623 has 2 divisors, whose sum is σ = 16211624. Its totient is φ = 16211622.

The previous prime is 16211599. The next prime is 16211633. The reversal of 16211623 is 32611261.

It is a strong prime.

It is an emirp because it is prime and its reverse (32611261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16211623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16211594 and 16211603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16211633) 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 as a sum of consecutive naturals, namely, 8105811 + 8105812.

It is an arithmetic number, because the mean of its divisors is an integer number (8105812).

Almost surely, 2^16211623 is an apocalyptic number.

16211623 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211623 is an equidigital number, since it uses as much as digits as its factorization.

16211623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 16211623 is about 4026.3659793913. The cubic root of 16211623 is about 253.0902988146.

Adding to 16211623 its reverse (32611261), we get a palindrome (48822884).

The spelling of 16211623 in words is "sixteen million, two hundred eleven thousand, six hundred twenty-three".