12351243251 has 4 divisors (see below), whose sum is σ = 12413310000. Its totient is φ = 12289176504.

The previous prime is 12351243199. The next prime is 12351243259. The reversal of 12351243251 is 15234215321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12351243251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12351243259) 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, 31033076 + ... + 31033473.

It is an arithmetic number, because the mean of its divisors is an integer number (3103327500).

Almost surely, 2^12351243251 is an apocalyptic number.

12351243251 is a deficient number, since it is larger than the sum of its proper divisors (62066749).

12351243251 is an equidigital number, since it uses as much as digits as its factorization.

12351243251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62066748.

The product of its digits is 7200, while the sum is 29.

Adding to 12351243251 its reverse (15234215321), we get a palindrome (27585458572).

The spelling of 12351243251 in words is "twelve billion, three hundred fifty-one million, two hundred forty-three thousand, two hundred fifty-one".