13123230506 has 8 divisors (see below), whose sum is σ = 19719442980. Its totient is φ = 6550082848.

The previous prime is 13123230503. The next prime is 13123230511. The reversal of 13123230506 is 60503232131.

It can be written as a sum of positive squares in 2 ways, for example, as 12579641281 + 543589225 = 112159^2 + 23315^2 .

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

It is a super-3 number, since 3×13123230506³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13123230503) 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, 5764781 + ... + 5767056.

Almost surely, 2^13123230506 is an apocalyptic number.

13123230506 is a deficient number, since it is larger than the sum of its proper divisors (6596212474).

13123230506 is a wasteful number, since it uses less digits than its factorization.

13123230506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532408.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 13123230506 its reverse (60503232131), we get a palindrome (73626462637).

The spelling of 13123230506 in words is "thirteen billion, one hundred twenty-three million, two hundred thirty thousand, five hundred six".