1123240369 has 2 divisors, whose sum is σ = 1123240370. Its totient is φ = 1123240368.

The previous prime is 1123240297. The next prime is 1123240373. The reversal of 1123240369 is 9630423211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003622400 + 119617969 = 31680^2 + 10937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123240369 is a prime.

It is a super-2 number, since 2×1123240369² = 2523337853102512322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123240369.

It is not a weakly prime, because it can be changed into another prime (1123220369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561620184 + 561620185.

It is an arithmetic number, because the mean of its divisors is an integer number (561620185).

Almost surely, 2^1123240369 is an apocalyptic number.

It is an amenable number.

1123240369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123240369 is an equidigital number, since it uses as much as digits as its factorization.

1123240369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1123240369 is about 33514.7783671621. The cubic root of 1123240369 is about 1039.4993796810.

The spelling of 1123240369 in words is "one billion, one hundred twenty-three million, two hundred forty thousand, three hundred sixty-nine".