1123682309 has 4 divisors (see below), whose sum is σ = 1144883916. Its totient is φ = 1102480704.

The previous prime is 1123682299. The next prime is 1123682323. The reversal of 1123682309 is 9032863211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9032863211 = 42797 ⋅211063.

It can be written as a sum of positive squares in 2 ways, for example, as 372374209 + 751308100 = 19297^2 + 27410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123682309 - 2¹⁶ = 1123616773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123682359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10600724 + ... + 10600829.

It is an arithmetic number, because the mean of its divisors is an integer number (286220979).

Almost surely, 2^1123682309 is an apocalyptic number.

It is an amenable number.

1123682309 is a deficient number, since it is larger than the sum of its proper divisors (21201607).

1123682309 is an equidigital number, since it uses as much as digits as its factorization.

1123682309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21201606.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1123682309 is about 33521.3709296025. The cubic root of 1123682309 is about 1039.6356924809.

The spelling of 1123682309 in words is "one billion, one hundred twenty-three million, six hundred eighty-two thousand, three hundred nine".