13311212343397 has 4 divisors (see below), whose sum is σ = 13311223695340. Its totient is φ = 13311200991456.

The previous prime is 13311212343283. The next prime is 13311212343427. The reversal of 13311212343397 is 79334321211331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 812682417121 + 12498529926276 = 901489^2 + 3535326^2 .

It is a cyclic number.

It is not a de Polignac number, because 13311212343397 - 2³⁹ = 12761456529509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311212343997) 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 in 3 ways as a sum of consecutive naturals, for example, 3684072 + ... + 6339937.

It is an arithmetic number, because the mean of its divisors is an integer number (3327805923835).

Almost surely, 2^{13311212343397} is an apocalyptic number.

It is an amenable number.

13311212343397 is a deficient number, since it is larger than the sum of its proper divisors (11351943).

13311212343397 is a wasteful number, since it uses less digits than its factorization.

13311212343397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351942.

The product of its digits is 244944, while the sum is 43.

The spelling of 13311212343397 in words is "thirteen trillion, three hundred eleven billion, two hundred twelve million, three hundred forty-three thousand, three hundred ninety-seven".