103181489 has 2 divisors, whose sum is σ = 103181490. Its totient is φ = 103181488.

The previous prime is 103181459. The next prime is 103181509. The reversal of 103181489 is 984181301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66699889 + 36481600 = 8167^2 + 6040^2 .

It is a cyclic number.

It is not a de Polignac number, because 103181489 - 2¹⁶ = 103115953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103181459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51590744 + 51590745.

It is an arithmetic number, because the mean of its divisors is an integer number (51590745).

Almost surely, 2^103181489 is an apocalyptic number.

It is an amenable number.

103181489 is a deficient number, since it is larger than the sum of its proper divisors (1).

103181489 is an equidigital number, since it uses as much as digits as its factorization.

103181489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 103181489 is about 10157.8289511096. The cubic root of 103181489 is about 469.0299730951.

The spelling of 103181489 in words is "one hundred three million, one hundred eighty-one thousand, four hundred eighty-nine".