30143173 has 2 divisors, whose sum is σ = 30143174. Its totient is φ = 30143172.

The previous prime is 30143153. The next prime is 30143189. The reversal of 30143173 is 37134103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30008484 + 134689 = 5478^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 30143173 - 2⁹ = 30142661 is a prime.

It is a super-2 number, since 2×30143173² = 1817221757015858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30143153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071586 + 15071587.

It is an arithmetic number, because the mean of its divisors is an integer number (15071587).

Almost surely, 2^30143173 is an apocalyptic number.

It is an amenable number.

30143173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30143173 is an equidigital number, since it uses as much as digits as its factorization.

30143173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 30143173 is about 5490.2798653621. The cubic root of 30143173 is about 311.2167683321.

Adding to 30143173 its reverse (37134103), we get a palindrome (67277276).

The spelling of 30143173 in words is "thirty million, one hundred forty-three thousand, one hundred seventy-three".