238623311 has 2 divisors, whose sum is σ = 238623312. Its totient is φ = 238623310.

The previous prime is 238623283. The next prime is 238623379. The reversal of 238623311 is 113326832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238623311 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238623391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119311655 + 119311656.

It is an arithmetic number, because the mean of its divisors is an integer number (119311656).

Almost surely, 2^238623311 is an apocalyptic number.

238623311 is a deficient number, since it is larger than the sum of its proper divisors (1).

238623311 is an equidigital number, since it uses as much as digits as its factorization.

238623311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 238623311 is about 15447.4370366090. The cubic root of 238623311 is about 620.2559739084.

The spelling of 238623311 in words is "two hundred thirty-eight million, six hundred twenty-three thousand, three hundred eleven".