238657343 has 2 divisors, whose sum is σ = 238657344. Its totient is φ = 238657342.

The previous prime is 238657337. The next prime is 238657387. The reversal of 238657343 is 343756832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238657343 - 2⁸ = 238657087 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 238657343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238657303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119328671 + 119328672.

It is an arithmetic number, because the mean of its divisors is an integer number (119328672).

Almost surely, 2^238657343 is an apocalyptic number.

238657343 is a deficient number, since it is larger than the sum of its proper divisors (1).

238657343 is an equidigital number, since it uses as much as digits as its factorization.

238657343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 41.

The square root of 238657343 is about 15448.5385392923. The cubic root of 238657343 is about 620.2854590801.

The spelling of 238657343 in words is "two hundred thirty-eight million, six hundred fifty-seven thousand, three hundred forty-three".