123013203135208 has 64 divisors (see below), whose sum is σ = 239673662968320. Its totient is φ = 59143876646400.

The previous prime is 123013203135187. The next prime is 123013203135209. The reversal of 123013203135208 is 802531302310321.

It is not an unprimeable number, because it can be changed into a prime (123013203135209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78567010 + ... + 80117422.

It is an arithmetic number, because the mean of its divisors is an integer number (3744900983880).

Almost surely, 2^{123013203135208} is an apocalyptic number.

It is an amenable number.

123013203135208 is a deficient number, since it is larger than the sum of its proper divisors (116660459833112).

123013203135208 is a wasteful number, since it uses less digits than its factorization.

123013203135208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553938 (or 1553934 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 123013203135208 its reverse (802531302310321), we get a palindrome (925544505445529).

The spelling of 123013203135208 in words is "one hundred twenty-three trillion, thirteen billion, two hundred three million, one hundred thirty-five thousand, two hundred eight".