30143973 has 16 divisors (see below), whose sum is σ = 41095296. Its totient is φ = 19649280.

The previous prime is 30143959. The next prime is 30143977. The reversal of 30143973 is 37934103.

It is not a de Polignac number, because 30143973 - 2⁹ = 30143461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30143973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30143977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28665 + ... + 29697.

It is an arithmetic number, because the mean of its divisors is an integer number (2568456).

Almost surely, 2^30143973 is an apocalyptic number.

It is an amenable number.

30143973 is a deficient number, since it is larger than the sum of its proper divisors (10951323).

30143973 is a wasteful number, since it uses less digits than its factorization.

30143973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 30143973 is about 5490.3527209097. The cubic root of 30143973 is about 311.2195215394.

The spelling of 30143973 in words is "thirty million, one hundred forty-three thousand, nine hundred seventy-three".