12013200231 has 4 divisors (see below), whose sum is σ = 16017600312. Its totient is φ = 8008800152.

The previous prime is 12013200211. The next prime is 12013200247. The reversal of 12013200231 is 13200231021.

12013200231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13200231021 = 3 ⋅4400077007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013200231 is a prime.

It is a super-2 number, since 2×12013200231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12013200231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013200211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002200036 + ... + 2002200041.

It is an arithmetic number, because the mean of its divisors is an integer number (4004400078).

Almost surely, 2^12013200231 is an apocalyptic number.

12013200231 is a deficient number, since it is larger than the sum of its proper divisors (4004400081).

12013200231 is an equidigital number, since it uses as much as digits as its factorization.

12013200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004400080.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12013200231 its reverse (13200231021), we get a palindrome (25213431252).

The spelling of 12013200231 in words is "twelve billion, thirteen million, two hundred thousand, two hundred thirty-one".