124231109 has 2 divisors, whose sum is σ = 124231110. Its totient is φ = 124231108.

The previous prime is 124231097. The next prime is 124231153. The reversal of 124231109 is 901132421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67650625 + 56580484 = 8225^2 + 7522^2 .

It is a cyclic number.

It is not a de Polignac number, because 124231109 - 2⁸ = 124230853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124231169) 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, 62115554 + 62115555.

It is an arithmetic number, because the mean of its divisors is an integer number (62115555).

Almost surely, 2^124231109 is an apocalyptic number.

It is an amenable number.

124231109 is a deficient number, since it is larger than the sum of its proper divisors (1).

124231109 is an equidigital number, since it uses as much as digits as its factorization.

124231109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 124231109 is about 11145.9009954333. The cubic root of 124231109 is about 498.9727027663.

The spelling of 124231109 in words is "one hundred twenty-four million, two hundred thirty-one thousand, one hundred nine".