13212445052431 has 16 divisors (see below), whose sum is σ = 14009025941280. Its totient is φ = 12418023720960.

The previous prime is 13212445052423. The next prime is 13212445052461. The reversal of 13212445052431 is 13425054421231.

It is a cyclic number.

It is not a de Polignac number, because 13212445052431 - 2³ = 13212445052423 is a prime.

It is a super-2 number, since 2×13212445052431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212445052461) 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, 67616551 + ... + 67811671.

It is an arithmetic number, because the mean of its divisors is an integer number (875564121330).

Almost surely, 2^{13212445052431} is an apocalyptic number.

13212445052431 is a deficient number, since it is larger than the sum of its proper divisors (796580888849).

13212445052431 is a wasteful number, since it uses less digits than its factorization.

13212445052431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200634.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 13212445052431 its reverse (13425054421231), we get a palindrome (26637499473662).

The spelling of 13212445052431 in words is "thirteen trillion, two hundred twelve billion, four hundred forty-five million, fifty-two thousand, four hundred thirty-one".