1123274309 has 2 divisors, whose sum is σ = 1123274310. Its totient is φ = 1123274308.

The previous prime is 1123274297. The next prime is 1123274323. The reversal of 1123274309 is 9034723211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017801409 + 105472900 = 31903^2 + 10270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123274309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123474309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561637154 + 561637155.

It is an arithmetic number, because the mean of its divisors is an integer number (561637155).

Almost surely, 2^1123274309 is an apocalyptic number.

It is an amenable number.

1123274309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123274309 is an equidigital number, since it uses as much as digits as its factorization.

1123274309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1123274309 is about 33515.2847071303. The cubic root of 1123274309 is about 1039.5098494654.

The spelling of 1123274309 in words is "one billion, one hundred twenty-three million, two hundred seventy-four thousand, three hundred nine".