231103189 has 2 divisors, whose sum is σ = 231103190. Its totient is φ = 231103188.

The previous prime is 231103163. The next prime is 231103211. The reversal of 231103189 is 981301132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163584100 + 67519089 = 12790^2 + 8217^2 .

It is a cyclic number.

It is not a de Polignac number, because 231103189 - 2⁵ = 231103157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231103139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115551594 + 115551595.

It is an arithmetic number, because the mean of its divisors is an integer number (115551595).

Almost surely, 2^231103189 is an apocalyptic number.

It is an amenable number.

231103189 is a deficient number, since it is larger than the sum of its proper divisors (1).

231103189 is an equidigital number, since it uses as much as digits as its factorization.

231103189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 231103189 is about 15202.0784434235. The cubic root of 231103189 is about 613.6705934659.

The spelling of 231103189 in words is "two hundred thirty-one million, one hundred three thousand, one hundred eighty-nine".