238172323 has 2 divisors, whose sum is σ = 238172324. Its totient is φ = 238172322.

The previous prime is 238172267. The next prime is 238172339. The reversal of 238172323 is 323271832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238172323 - 2⁹ = 238171811 is a prime.

It is not a weakly prime, because it can be changed into another prime (238172393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119086161 + 119086162.

It is an arithmetic number, because the mean of its divisors is an integer number (119086162).

Almost surely, 2^238172323 is an apocalyptic number.

238172323 is a deficient number, since it is larger than the sum of its proper divisors (1).

238172323 is an equidigital number, since it uses as much as digits as its factorization.

238172323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 238172323 is about 15432.8326304668. The cubic root of 238172323 is about 619.8649749318.

The spelling of 238172323 in words is "two hundred thirty-eight million, one hundred seventy-two thousand, three hundred twenty-three".