234430247 has 2 divisors, whose sum is σ = 234430248. Its totient is φ = 234430246.

The previous prime is 234430213. The next prime is 234430249. The reversal of 234430247 is 742034432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234430247 is a prime.

Together with 234430249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234430249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117215123 + 117215124.

It is an arithmetic number, because the mean of its divisors is an integer number (117215124).

Almost surely, 2^234430247 is an apocalyptic number.

234430247 is a deficient number, since it is larger than the sum of its proper divisors (1).

234430247 is an equidigital number, since it uses as much as digits as its factorization.

234430247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 29.

The square root of 234430247 is about 15311.1151455405. The cubic root of 234430247 is about 616.6014595121.

Adding to 234430247 its reverse (742034432), we get a palindrome (976464679).

The spelling of 234430247 in words is "two hundred thirty-four million, four hundred thirty thousand, two hundred forty-seven".