231103009 has 2 divisors, whose sum is σ = 231103010. Its totient is φ = 231103008.

The previous prime is 231103003. The next prime is 231103021. The reversal of 231103009 is 900301132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205062400 + 26040609 = 14320^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 231103009 - 2¹⁵ = 231070241 is a prime.

It is not a weakly prime, because it can be changed into another prime (231103003) 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, 115551504 + 115551505.

It is an arithmetic number, because the mean of its divisors is an integer number (115551505).

Almost surely, 2^231103009 is an apocalyptic number.

It is an amenable number.

231103009 is a deficient number, since it is larger than the sum of its proper divisors (1).

231103009 is an equidigital number, since it uses as much as digits as its factorization.

231103009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 231103009 is about 15202.0725231792. The cubic root of 231103009 is about 613.6704341420.

The spelling of 231103009 in words is "two hundred thirty-one million, one hundred three thousand, nine".