30143073 has 8 divisors (see below), whose sum is σ = 40457536. Its totient is φ = 19962000.

The previous prime is 30143051. The next prime is 30143081. The reversal of 30143073 is 37034103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30143073 - 2⁸ = 30142817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30143173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32818 + ... + 33723.

It is an arithmetic number, because the mean of its divisors is an integer number (5057192).

Almost surely, 2^30143073 is an apocalyptic number.

It is an amenable number.

30143073 is a deficient number, since it is larger than the sum of its proper divisors (10314463).

30143073 is a wasteful number, since it uses less digits than its factorization.

30143073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66695.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 30143073 is about 5490.2707583506. The cubic root of 30143073 is about 311.2164241777.

Adding to 30143073 its reverse (37034103), we get a palindrome (67177176).

The spelling of 30143073 in words is "thirty million, one hundred forty-three thousand, seventy-three".