129930812103 has 4 divisors (see below), whose sum is σ = 173241082808. Its totient is φ = 86620541400.

The previous prime is 129930812083. The next prime is 129930812117. The reversal of 129930812103 is 301218039921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301218039921 = 3 ⋅100406013307.

It is not a de Polignac number, because 129930812103 - 2⁵ = 129930812071 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 (129930812003) 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, 21655135348 + ... + 21655135353.

It is an arithmetic number, because the mean of its divisors is an integer number (43310270702).

Almost surely, 2^129930812103 is an apocalyptic number.

129930812103 is a deficient number, since it is larger than the sum of its proper divisors (43310270705).

129930812103 is an equidigital number, since it uses as much as digits as its factorization.

129930812103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43310270704.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 129930812103 in words is "one hundred twenty-nine billion, nine hundred thirty million, eight hundred twelve thousand, one hundred three".