13123231230 has 16 divisors (see below), whose sum is σ = 31495755024. Its totient is φ = 3499528320.

The previous prime is 13123231217. The next prime is 13123231237. The reversal of 13123231230 is 3213232131.

It is a junction number, because it is equal to n+sod(n) for n = 13123231197 and 13123231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123231237) 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, 218720491 + ... + 218720550.

It is an arithmetic number, because the mean of its divisors is an integer number (1968484689).

Almost surely, 2^13123231230 is an apocalyptic number.

13123231230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123231230 is an abundant number, since it is smaller than the sum of its proper divisors (18372523794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123231230 is a wasteful number, since it uses less digits than its factorization.

13123231230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437441051.

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

Adding to 13123231230 its reverse (3213232131), we get a palindrome (16336463361).

Subtracting from 13123231230 its reverse (3213232131), we obtain a palindrome (9909999099).

The spelling of 13123231230 in words is "thirteen billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred thirty".