1125131103 has 12 divisors (see below), whose sum is σ = 1628965728. Its totient is φ = 748344480.

The previous prime is 1125131093. The next prime is 1125131123. The reversal of 1125131103 is 3011315211.

It is not a de Polignac number, because 1125131103 - 2⁵ = 1125131071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125131123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141150 + ... + 148907.

It is an arithmetic number, because the mean of its divisors is an integer number (135747144).

Almost surely, 2^1125131103 is an apocalyptic number.

1125131103 is a deficient number, since it is larger than the sum of its proper divisors (503834625).

1125131103 is a wasteful number, since it uses less digits than its factorization.

1125131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290494 (or 290491 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1125131103 is about 33542.9739736953. The cubic root of 1125131103 is about 1040.0823107314.

Adding to 1125131103 its reverse (3011315211), we get a palindrome (4136446314).

The spelling of 1125131103 in words is "one billion, one hundred twenty-five million, one hundred thirty-one thousand, one hundred three".