13121240347 has 2 divisors, whose sum is σ = 13121240348. Its totient is φ = 13121240346.

The previous prime is 13121240333. The next prime is 13121240351. The reversal of 13121240347 is 74304212131.

13121240347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13121240347 - 2¹⁵ = 13121207579 is a prime.

It is not a weakly prime, because it can be changed into another prime (13121240317) 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 as a sum of consecutive naturals, namely, 6560620173 + 6560620174.

It is an arithmetic number, because the mean of its divisors is an integer number (6560620174).

Almost surely, 2^13121240347 is an apocalyptic number.

13121240347 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121240347 is an equidigital number, since it uses as much as digits as its factorization.

13121240347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 13121240347 its reverse (74304212131), we get a palindrome (87425452478).

The spelling of 13121240347 in words is "thirteen billion, one hundred twenty-one million, two hundred forty thousand, three hundred forty-seven".