30143297 has 2 divisors, whose sum is σ = 30143298. Its totient is φ = 30143296.

The previous prime is 30143293. The next prime is 30143299. The reversal of 30143297 is 79234103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26460736 + 3682561 = 5144^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 30143297 - 2² = 30143293 is a prime.

Together with 30143299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30143293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071648 + 15071649.

It is an arithmetic number, because the mean of its divisors is an integer number (15071649).

Almost surely, 2^30143297 is an apocalyptic number.

It is an amenable number.

30143297 is a deficient number, since it is larger than the sum of its proper divisors (1).

30143297 is an equidigital number, since it uses as much as digits as its factorization.

30143297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30143297 is about 5490.2911580352. The cubic root of 30143297 is about 311.2171950824.

The spelling of 30143297 in words is "thirty million, one hundred forty-three thousand, two hundred ninety-seven".