12351344315321 has 4 divisors (see below), whose sum is σ = 13474193798544. Its totient is φ = 11228494832100.

The previous prime is 12351344315207. The next prime is 12351344315327.

It is a happy number.

12351344315321 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12351344315321 - 2¹⁰ = 12351344314297 is a prime.

It is a super-2 number, since 2×12351344315321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12351344315327) 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, 561424741595 + ... + 561424741616.

It is an arithmetic number, because the mean of its divisors is an integer number (3368548449636).

Almost surely, 2^{12351344315321} is an apocalyptic number.

12351344315321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12351344315321 is a deficient number, since it is larger than the sum of its proper divisors (1122849483223).

12351344315321 is a wasteful number, since it uses less digits than its factorization.

12351344315321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122849483222.

The product of its digits is 129600, while the sum is 38.

The spelling of 12351344315321 in words is "twelve trillion, three hundred fifty-one billion, three hundred forty-four million, three hundred fifteen thousand, three hundred twenty-one".