1123389331 has 2 divisors, whose sum is σ = 1123389332. Its totient is φ = 1123389330.

The previous prime is 1123389287. The next prime is 1123389343. The reversal of 1123389331 is 1339833211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123389331 - 2¹¹ = 1123387283 is a prime.

It is a super-2 number, since 2×1123389331² = 2524007178009255122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123389361) 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, 561694665 + 561694666.

It is an arithmetic number, because the mean of its divisors is an integer number (561694666).

Almost surely, 2^1123389331 is an apocalyptic number.

1123389331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123389331 is an equidigital number, since it uses as much as digits as its factorization.

1123389331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 1123389331 is about 33517.0006265477. Note that the first 3 decimals coincide. The cubic root of 1123389331 is about 1039.5453297929.

The spelling of 1123389331 in words is "one billion, one hundred twenty-three million, three hundred eighty-nine thousand, three hundred thirty-one".