1123320137 has 2 divisors, whose sum is σ = 1123320138. Its totient is φ = 1123320136.

The previous prime is 1123320127. The next prime is 1123320151. The reversal of 1123320137 is 7310233211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086097936 + 37222201 = 32956^2 + 6101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123320137 - 2⁶ = 1123320073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123320127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561660068 + 561660069.

It is an arithmetic number, because the mean of its divisors is an integer number (561660069).

Almost surely, 2^1123320137 is an apocalyptic number.

It is an amenable number.

1123320137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123320137 is an equidigital number, since it uses as much as digits as its factorization.

1123320137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1123320137 is about 33515.9683882176. The cubic root of 1123320137 is about 1039.5239861161.

Adding to 1123320137 its reverse (7310233211), we get a palindrome (8433553348).

The spelling of 1123320137 in words is "one billion, one hundred twenty-three million, three hundred twenty thousand, one hundred thirty-seven".