20164303 has 4 divisors (see below), whose sum is σ = 20185920. Its totient is φ = 20142688.

The previous prime is 20164283. The next prime is 20164321. The reversal of 20164303 is 30346102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30346102 = 2 ⋅15173051.

It is a cyclic number.

It is not a de Polignac number, because 20164303 - 2⁵ = 20164271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9343 + ... + 11296.

It is an arithmetic number, because the mean of its divisors is an integer number (5046480).

Almost surely, 2^20164303 is an apocalyptic number.

20164303 is a deficient number, since it is larger than the sum of its proper divisors (21617).

20164303 is an equidigital number, since it uses as much as digits as its factorization.

20164303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21616.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20164303 is about 4490.4680156973. The cubic root of 20164303 is about 272.1830470228.

The spelling of 20164303 in words is "twenty million, one hundred sixty-four thousand, three hundred three".