12343131243 has 16 divisors (see below), whose sum is σ = 18408852000. Its totient is φ = 8173524960.

The previous prime is 12343131233. The next prime is 12343131247. The reversal of 12343131243 is 34213134321.

It is a happy number.

12343131243 is a `hidden beast` number, since 1 + 2 + 343 + 1 + 312 + 4 + 3 = 666.

It is not a de Polignac number, because 12343131243 - 2⁹ = 12343130731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12343131247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530048 + ... + 1538093.

It is an arithmetic number, because the mean of its divisors is an integer number (1150553250).

Almost surely, 2^12343131243 is an apocalyptic number.

12343131243 is a deficient number, since it is larger than the sum of its proper divisors (6065720757).

12343131243 is a wasteful number, since it uses less digits than its factorization.

12343131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068299 (or 3068293 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 12343131243 its reverse (34213134321), we get a palindrome (46556265564).

The spelling of 12343131243 in words is "twelve billion, three hundred forty-three million, one hundred thirty-one thousand, two hundred forty-three".