1153115123 has 2 divisors, whose sum is σ = 1153115124. Its totient is φ = 1153115122.

The previous prime is 1153115087. The next prime is 1153115141. The reversal of 1153115123 is 3215113511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1153115123 - 2⁶ = 1153115059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1153115923) 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, 576557561 + 576557562.

It is an arithmetic number, because the mean of its divisors is an integer number (576557562).

Almost surely, 2^1153115123 is an apocalyptic number.

1153115123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153115123 is an equidigital number, since it uses as much as digits as its factorization.

1153115123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 23.

The square root of 1153115123 is about 33957.5488367462. The cubic root of 1153115123 is about 1048.6346950153.

Adding to 1153115123 its reverse (3215113511), we get a palindrome (4368228634).

The spelling of 1153115123 in words is "one billion, one hundred fifty-three million, one hundred fifteen thousand, one hundred twenty-three".