130203312123 has 4 divisors (see below), whose sum is σ = 173604416168. Its totient is φ = 86802208080.

The previous prime is 130203312121. The next prime is 130203312131. The reversal of 130203312123 is 321213302031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321213302031 = 3 ⋅107071100677.

It is not a de Polignac number, because 130203312123 - 2¹ = 130203312121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130203312123.

It is not an unprimeable number, because it can be changed into a prime (130203312121) 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, 21700552018 + ... + 21700552023.

It is an arithmetic number, because the mean of its divisors is an integer number (43401104042).

Almost surely, 2^130203312123 is an apocalyptic number.

130203312123 is a deficient number, since it is larger than the sum of its proper divisors (43401104045).

130203312123 is an equidigital number, since it uses as much as digits as its factorization.

130203312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43401104044.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 130203312123 its reverse (321213302031), we get a palindrome (451416614154).

The spelling of 130203312123 in words is "one hundred thirty billion, two hundred three million, three hundred twelve thousand, one hundred twenty-three".