125631103 has 12 divisors (see below), whose sum is σ = 140133448. Its totient is φ = 111958560.

The previous prime is 125631089. The next prime is 125631113. The reversal of 125631103 is 301136521.

It is a happy number.

It is not a de Polignac number, because 125631103 - 2²⁵ = 92076671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125631113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5188 + ... + 16678.

Almost surely, 2^125631103 is an apocalyptic number.

125631103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125631103 is a deficient number, since it is larger than the sum of its proper divisors (14502345).

125631103 is a wasteful number, since it uses less digits than its factorization.

125631103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562 (or 11533 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 125631103 is about 11208.5281370928. The cubic root of 125631103 is about 500.8400584797.

Adding to 125631103 its reverse (301136521), we get a palindrome (426767624).

The spelling of 125631103 in words is "one hundred twenty-five million, six hundred thirty-one thousand, one hundred three".