13123315234 has 8 divisors (see below), whose sum is σ = 19687194540. Its totient is φ = 6560917056.

The previous prime is 13123315217. The next prime is 13123315237. The reversal of 13123315234 is 43251332131.

It can be written as a sum of positive squares in 2 ways, for example, as 13118266225 + 5049009 = 114535^2 + 2247^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13123315237) 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, 347859 + ... + 383734.

Almost surely, 2^13123315234 is an apocalyptic number.

13123315234 is a deficient number, since it is larger than the sum of its proper divisors (6563879306).

13123315234 is an equidigital number, since it uses as much as digits as its factorization.

13123315234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740564.

The product of its digits is 6480, while the sum is 28.

Adding to 13123315234 its reverse (43251332131), we get a palindrome (56374647365).

The spelling of 13123315234 in words is "thirteen billion, one hundred twenty-three million, three hundred fifteen thousand, two hundred thirty-four".