238862131187 has 2 divisors, whose sum is σ = 238862131188. Its totient is φ = 238862131186.

The previous prime is 238862131129. The next prime is 238862131201. The reversal of 238862131187 is 781131268832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238862131187 - 2²² = 238857936883 is a prime.

It is not a weakly prime, because it can be changed into another prime (238862131787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119431065593 + 119431065594.

It is an arithmetic number, because the mean of its divisors is an integer number (119431065594).

Almost surely, 2^238862131187 is an apocalyptic number.

238862131187 is a deficient number, since it is larger than the sum of its proper divisors (1).

238862131187 is an equidigital number, since it uses as much as digits as its factorization.

238862131187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The spelling of 238862131187 in words is "two hundred thirty-eight billion, eight hundred sixty-two million, one hundred thirty-one thousand, one hundred eighty-seven".