125311103 has 4 divisors (see below), whose sum is σ = 127435080. Its totient is φ = 123187128.

The previous prime is 125311093. The next prime is 125311111. The reversal of 125311103 is 301113521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301113521 = 59 ⋅5103619.

It is a cyclic number.

It is not a de Polignac number, because 125311103 - 2¹⁰ = 125310079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125311163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061900 + ... + 1062017.

It is an arithmetic number, because the mean of its divisors is an integer number (31858770).

Almost surely, 2^125311103 is an apocalyptic number.

125311103 is a deficient number, since it is larger than the sum of its proper divisors (2123977).

125311103 is an equidigital number, since it uses as much as digits as its factorization.

125311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123976.

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

The square root of 125311103 is about 11194.2441906544. The cubic root of 125311103 is about 500.4144603503.

Adding to 125311103 its reverse (301113521), we get a palindrome (426424624).

The spelling of 125311103 in words is "one hundred twenty-five million, three hundred eleven thousand, one hundred three".