30213143 has 2 divisors, whose sum is σ = 30213144. Its totient is φ = 30213142.

The previous prime is 30213119. The next prime is 30213163. The reversal of 30213143 is 34131203.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30213143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30213163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106571 + 15106572.

It is an arithmetic number, because the mean of its divisors is an integer number (15106572).

Almost surely, 2^30213143 is an apocalyptic number.

30213143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30213143 is an equidigital number, since it uses as much as digits as its factorization.

30213143 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30213143 is about 5496.6483423992. The cubic root of 30213143 is about 311.4573867731.

Adding to 30213143 its reverse (34131203), we get a palindrome (64344346).

The spelling of 30213143 in words is "thirty million, two hundred thirteen thousand, one hundred forty-three".