12313231135 has 4 divisors (see below), whose sum is σ = 14775877368. Its totient is φ = 9850584904.

The previous prime is 12313231061. The next prime is 12313231153. The reversal of 12313231135 is 53113231321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53113231321 = 23 ⋅2309270927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12313231135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231323109 + ... + 1231323118.

It is an arithmetic number, because the mean of its divisors is an integer number (3693969342).

Almost surely, 2^12313231135 is an apocalyptic number.

12313231135 is a deficient number, since it is larger than the sum of its proper divisors (2462646233).

12313231135 is an equidigital number, since it uses as much as digits as its factorization.

12313231135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462646232.

The product of its digits is 1620, while the sum is 25.

Adding to 12313231135 its reverse (53113231321), we get a palindrome (65426462456).

The spelling of 12313231135 in words is "twelve billion, three hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-five".