1125023113 has 2 divisors, whose sum is σ = 1125023114. Its totient is φ = 1125023112.

The previous prime is 1125023111. The next prime is 1125023189. The reversal of 1125023113 is 3113205211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780252489 + 344770624 = 27933^2 + 18568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125023113 - 2¹ = 1125023111 is a prime.

Together with 1125023111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1125023111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562511556 + 562511557.

It is an arithmetic number, because the mean of its divisors is an integer number (562511557).

Almost surely, 2^1125023113 is an apocalyptic number.

It is an amenable number.

1125023113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125023113 is an equidigital number, since it uses as much as digits as its factorization.

1125023113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1125023113 is about 33541.3642089883. The cubic root of 1125023113 is about 1040.0490339923.

Adding to 1125023113 its reverse (3113205211), we get a palindrome (4238228324).

The spelling of 1125023113 in words is "one billion, one hundred twenty-five million, twenty-three thousand, one hundred thirteen".