2003312203181 has 2 divisors, whose sum is σ = 2003312203182. Its totient is φ = 2003312203180.

The previous prime is 2003312203177. The next prime is 2003312203213. The reversal of 2003312203181 is 1813022133002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1988974296100 + 14337907081 = 1410310^2 + 119741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003312203181 - 2² = 2003312203177 is a prime.

It is a super-2 number, since 2×2003312203181² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2003312203181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003312203111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001656101590 + 1001656101591.

It is an arithmetic number, because the mean of its divisors is an integer number (1001656101591).

Almost surely, 2^{2003312203181} is an apocalyptic number.

It is an amenable number.

2003312203181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003312203181 is an equidigital number, since it uses as much as digits as its factorization.

2003312203181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 2003312203181 its reverse (1813022133002), we get a palindrome (3816334336183).

The spelling of 2003312203181 in words is "two trillion, three billion, three hundred twelve million, two hundred three thousand, one hundred eighty-one".