125131103 has 2 divisors, whose sum is σ = 125131104. Its totient is φ = 125131102.

The previous prime is 125131037. The next prime is 125131129. The reversal of 125131103 is 301131521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125131103 - 2²⁰ = 124082527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125131183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62565551 + 62565552.

It is an arithmetic number, because the mean of its divisors is an integer number (62565552).

Almost surely, 2^125131103 is an apocalyptic number.

125131103 is a deficient number, since it is larger than the sum of its proper divisors (1).

125131103 is an equidigital number, since it uses as much as digits as its factorization.

125131103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 125131103 is about 11186.2014553646. The cubic root of 125131103 is about 500.1747429227.

Adding to 125131103 its reverse (301131521), we get a palindrome (426262624).

The spelling of 125131103 in words is "one hundred twenty-five million, one hundred thirty-one thousand, one hundred three".