16513723 has 2 divisors, whose sum is σ = 16513724. Its totient is φ = 16513722.

The previous prime is 16513709. The next prime is 16513727. The reversal of 16513723 is 32731561.

It is a strong prime.

It is an emirp because it is prime and its reverse (32731561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16513723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16513691 and 16513700.

It is not a weakly prime, because it can be changed into another prime (16513727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256861 + 8256862.

It is an arithmetic number, because the mean of its divisors is an integer number (8256862).

Almost surely, 2^16513723 is an apocalyptic number.

16513723 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513723 is an equidigital number, since it uses as much as digits as its factorization.

16513723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 16513723 is about 4063.7080357723. The cubic root of 16513723 is about 254.6527273314.

The spelling of 16513723 in words is "sixteen million, five hundred thirteen thousand, seven hundred twenty-three".