20303023 has 8 divisors (see below), whose sum is σ = 21899808. Its totient is φ = 18711264.

The previous prime is 20303011. The next prime is 20303027. The reversal of 20303023 is 32030302.

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

It is not a de Polignac number, because 20303023 - 2¹⁷ = 20171951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302994 and 20303012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15261 + ... + 16537.

It is an arithmetic number, because the mean of its divisors is an integer number (2737476).

Almost surely, 2^20303023 is an apocalyptic number.

20303023 is a deficient number, since it is larger than the sum of its proper divisors (1596785).

20303023 is a wasteful number, since it uses less digits than its factorization.

20303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513.

The product of its (nonzero) digits is 108, while the sum is 13.

The square root of 20303023 is about 4505.8875929166. The cubic root of 20303023 is about 272.8057808090.

Adding to 20303023 its reverse (32030302), we get a palindrome (52333325).

It can be divided in two parts, 2030302 and 3, that multiplied together give a palindrome (6090906).

The spelling of 20303023 in words is "twenty million, three hundred three thousand, twenty-three".