238713971 has 2 divisors, whose sum is σ = 238713972. Its totient is φ = 238713970.

The previous prime is 238713887. The next prime is 238713977. The reversal of 238713971 is 179317832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238713971 - 2¹⁸ = 238451827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (238713977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119356985 + 119356986.

It is an arithmetic number, because the mean of its divisors is an integer number (119356986).

Almost surely, 2^238713971 is an apocalyptic number.

238713971 is a deficient number, since it is larger than the sum of its proper divisors (1).

238713971 is an equidigital number, since it uses as much as digits as its factorization.

238713971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 238713971 is about 15450.3712253136. The cubic root of 238713971 is about 620.3345151126.

The spelling of 238713971 in words is "two hundred thirty-eight million, seven hundred thirteen thousand, nine hundred seventy-one".