123512500103 has 8 divisors (see below), whose sum is σ = 124269563040. Its totient is φ = 122755645440.

The previous prime is 123512500091. The next prime is 123512500109. The reversal of 123512500103 is 301005215321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123512500103 - 2¹² = 123512496007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123512500109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234583 + ... + 1330871.

It is an arithmetic number, because the mean of its divisors is an integer number (15533695380).

Almost surely, 2^123512500103 is an apocalyptic number.

123512500103 is a deficient number, since it is larger than the sum of its proper divisors (757062937).

123512500103 is an equidigital number, since it uses as much as digits as its factorization.

123512500103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104137.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 123512500103 its reverse (301005215321), we get a palindrome (424517715424).

The spelling of 123512500103 in words is "one hundred twenty-three billion, five hundred twelve million, five hundred thousand, one hundred three".