20319067 has 4 divisors (see below), whose sum is σ = 20814696. Its totient is φ = 19823440.

The previous prime is 20319011. The next prime is 20319083. The reversal of 20319067 is 76091302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20319067 - 2⁷ = 20318939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20319007) 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 in 3 ways as a sum of consecutive naturals, for example, 247753 + ... + 247834.

It is an arithmetic number, because the mean of its divisors is an integer number (5203674).

Almost surely, 2^20319067 is an apocalyptic number.

20319067 is a deficient number, since it is larger than the sum of its proper divisors (495629).

20319067 is an equidigital number, since it uses as much as digits as its factorization.

20319067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495628.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20319067 is about 4507.6675786930. The cubic root of 20319067 is about 272.8776214004.

The spelling of 20319067 in words is "twenty million, three hundred nineteen thousand, sixty-seven".