238023091 has 2 divisors, whose sum is σ = 238023092. Its totient is φ = 238023090.

The previous prime is 238023077. The next prime is 238023101. The reversal of 238023091 is 190320832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238023091 - 2¹⁷ = 237892019 is a prime.

It is not a weakly prime, because it can be changed into another prime (238023011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119011545 + 119011546.

It is an arithmetic number, because the mean of its divisors is an integer number (119011546).

Almost surely, 2^238023091 is an apocalyptic number.

238023091 is a deficient number, since it is larger than the sum of its proper divisors (1).

238023091 is an equidigital number, since it uses as much as digits as its factorization.

238023091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 238023091 is about 15427.9969859992. The cubic root of 238023091 is about 619.7354846317.

The spelling of 238023091 in words is "two hundred thirty-eight million, twenty-three thousand, ninety-one".