153243109 has 2 divisors, whose sum is σ = 153243110. Its totient is φ = 153243108.

The previous prime is 153243071. The next prime is 153243121. The reversal of 153243109 is 901342351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104550625 + 48692484 = 10225^2 + 6978^2 .

It is a cyclic number.

It is not a de Polignac number, because 153243109 - 2²¹ = 151145957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153243169) 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, 76621554 + 76621555.

It is an arithmetic number, because the mean of its divisors is an integer number (76621555).

Almost surely, 2^153243109 is an apocalyptic number.

It is an amenable number.

153243109 is a deficient number, since it is larger than the sum of its proper divisors (1).

153243109 is an equidigital number, since it uses as much as digits as its factorization.

153243109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 153243109 is about 12379.1400751425. The cubic root of 153243109 is about 535.1312561173.

The spelling of 153243109 in words is "one hundred fifty-three million, two hundred forty-three thousand, one hundred nine".