20320023 has 8 divisors (see below), whose sum is σ = 27182848. Its totient is φ = 13501944.

The previous prime is 20320021. The next prime is 20320031. The reversal of 20320023 is 32002302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20320023 - 2¹ = 20320021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20319990 and 20320008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320021) 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 7 ways as a sum of consecutive naturals, for example, 10111 + ... + 11952.

It is an arithmetic number, because the mean of its divisors is an integer number (3397856).

Almost surely, 2^20320023 is an apocalyptic number.

20320023 is a deficient number, since it is larger than the sum of its proper divisors (6862825).

20320023 is a wasteful number, since it uses less digits than its factorization.

20320023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22373.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20320023 is about 4507.7736189831. The cubic root of 20320023 is about 272.8819009098.

Adding to 20320023 its reverse (32002302), we get a palindrome (52322325).

The spelling of 20320023 in words is "twenty million, three hundred twenty thousand, twenty-three".