20359723 has 2 divisors, whose sum is σ = 20359724. Its totient is φ = 20359722.

The previous prime is 20359721. The next prime is 20359771. The reversal of 20359723 is 32795302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20359723 - 2¹ = 20359721 is a prime.

Together with 20359721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20359721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10179861 + 10179862.

It is an arithmetic number, because the mean of its divisors is an integer number (10179862).

Almost surely, 2^20359723 is an apocalyptic number.

20359723 is a deficient number, since it is larger than the sum of its proper divisors (1).

20359723 is an equidigital number, since it uses as much as digits as its factorization.

20359723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 20359723 is about 4512.1749744441. The cubic root of 20359723 is about 273.0594985418.

The spelling of 20359723 in words is "twenty million, three hundred fifty-nine thousand, seven hundred twenty-three".