103173121 has 2 divisors, whose sum is σ = 103173122. Its totient is φ = 103173120.

The previous prime is 103173079. The next prime is 103173127. The reversal of 103173121 is 121371301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96746896 + 6426225 = 9836^2 + 2535^2 .

It is a cyclic number.

It is not a de Polignac number, because 103173121 - 2¹¹ = 103171073 is a prime.

It is not a weakly prime, because it can be changed into another prime (103173127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51586560 + 51586561.

It is an arithmetic number, because the mean of its divisors is an integer number (51586561).

Almost surely, 2^103173121 is an apocalyptic number.

It is an amenable number.

103173121 is a deficient number, since it is larger than the sum of its proper divisors (1).

103173121 is an equidigital number, since it uses as much as digits as its factorization.

103173121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 103173121 is about 10157.4170437174. The cubic root of 103173121 is about 469.0172933372.

The spelling of 103173121 in words is "one hundred three million, one hundred seventy-three thousand, one hundred twenty-one".