30243397 has 2 divisors, whose sum is σ = 30243398. Its totient is φ = 30243396.

The previous prime is 30243359. The next prime is 30243403. The reversal of 30243397 is 79334203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 1503076 = 5361^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 30243397 - 2¹¹ = 30241349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30243347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15121698 + 15121699.

It is an arithmetic number, because the mean of its divisors is an integer number (15121699).

Almost surely, 2^30243397 is an apocalyptic number.

It is an amenable number.

30243397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30243397 is an equidigital number, since it uses as much as digits as its factorization.

30243397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 30243397 is about 5499.3996945121. The cubic root of 30243397 is about 311.5613116150.

The spelling of 30243397 in words is "thirty million, two hundred forty-three thousand, three hundred ninety-seven".