12320002134 has 48 divisors (see below), whose sum is σ = 29225261520. Its totient is φ = 3719839680.

The previous prime is 12320002133. The next prime is 12320002159. The reversal of 12320002134 is 43120002321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320002133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57469 + ... + 167160.

It is an arithmetic number, because the mean of its divisors is an integer number (608859615).

Almost surely, 2^12320002134 is an apocalyptic number.

12320002134 is an abundant number, since it is smaller than the sum of its proper divisors (16905259386).

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

12320002134 is a wasteful number, since it uses less digits than its factorization.

12320002134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224925 (or 224922 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12320002134 its reverse (43120002321), we get a palindrome (55440004455).

The spelling of 12320002134 in words is "twelve billion, three hundred twenty million, two thousand, one hundred thirty-four".