234423391 has 2 divisors, whose sum is σ = 234423392. Its totient is φ = 234423390.

The previous prime is 234423373. The next prime is 234423437. The reversal of 234423391 is 193324432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 234423391 - 2¹⁹ = 233899103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234423341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117211695 + 117211696.

It is an arithmetic number, because the mean of its divisors is an integer number (117211696).

Almost surely, 2^234423391 is an apocalyptic number.

234423391 is a deficient number, since it is larger than the sum of its proper divisors (1).

234423391 is an equidigital number, since it uses as much as digits as its factorization.

234423391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 234423391 is about 15310.8912542673. The cubic root of 234423391 is about 616.5954485403.

The spelling of 234423391 in words is "two hundred thirty-four million, four hundred twenty-three thousand, three hundred ninety-one".