2003020320181 has 2 divisors, whose sum is σ = 2003020320182. Its totient is φ = 2003020320180.

The previous prime is 2003020320149. The next prime is 2003020320193. The reversal of 2003020320181 is 1810230203002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1668165980625 + 334854339556 = 1291575^2 + 578666^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003020320181 - 2⁵ = 2003020320149 is a prime.

It is a super-2 number, since 2×2003020320181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003020320131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001510160090 + 1001510160091.

It is an arithmetic number, because the mean of its divisors is an integer number (1001510160091).

Almost surely, 2^{2003020320181} is an apocalyptic number.

It is an amenable number.

2003020320181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003020320181 is an equidigital number, since it uses as much as digits as its factorization.

2003020320181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2003020320181 its reverse (1810230203002), we get a palindrome (3813250523183).

The spelling of 2003020320181 in words is "two trillion, three billion, twenty million, three hundred twenty thousand, one hundred eighty-one".