20203030110173 has 2 divisors, whose sum is σ = 20203030110174. Its totient is φ = 20203030110172.

The previous prime is 20203030110139. The next prime is 20203030110233. The reversal of 20203030110173 is 37101103030202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20203029269284 + 840889 = 4494778^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203030110173 - 2¹⁴ = 20203030093789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203030115173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101515055086 + 10101515055087.

It is an arithmetic number, because the mean of its divisors is an integer number (10101515055087).

Almost surely, 2^{20203030110173} is an apocalyptic number.

It is an amenable number.

20203030110173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203030110173 is an equidigital number, since it uses as much as digits as its factorization.

20203030110173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 20203030110173 its reverse (37101103030202), we get a palindrome (57304133140375).

The spelling of 20203030110173 in words is "twenty trillion, two hundred three billion, thirty million, one hundred ten thousand, one hundred seventy-three".