30143321 has 8 divisors (see below), whose sum is σ = 32828040. Its totient is φ = 27510912.

The previous prime is 30143303. The next prime is 30143327. The reversal of 30143321 is 12334103.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1413721 + 28729600 = 1189^2 + 5360^2 .

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

It is not a de Polignac number, because 30143321 - 2⁶ = 30143257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30143321.

It is not an unprimeable number, because it can be changed into a prime (30143327) 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, 11870 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (4103505).

Almost surely, 2^30143321 is an apocalyptic number.

It is an amenable number.

30143321 is a deficient number, since it is larger than the sum of its proper divisors (2684719).

30143321 is a wasteful number, since it uses less digits than its factorization.

30143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26155.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30143321 is about 5490.2933437112. The cubic root of 30143321 is about 311.2172776791.

Adding to 30143321 its reverse (12334103), we get a palindrome (42477424).

The spelling of 30143321 in words is "thirty million, one hundred forty-three thousand, three hundred twenty-one".