13212143531 has 8 divisors (see below), whose sum is σ = 13466488464. Its totient is φ = 12957986080.

The previous prime is 13212143509. The next prime is 13212143543. The reversal of 13212143531 is 13534121231.

13212143531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13212143531 - 2²⁶ = 13145034667 is a prime.

It is a super-2 number, since 2×13212143531² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13212143531.

It is not an unprimeable number, because it can be changed into a prime (13212143501) 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 7 ways as a sum of consecutive naturals, for example, 99800 + ... + 190746.

It is an arithmetic number, because the mean of its divisors is an integer number (1683311058).

Almost surely, 2^13212143531 is an apocalyptic number.

13212143531 is a deficient number, since it is larger than the sum of its proper divisors (254344933).

13212143531 is an equidigital number, since it uses as much as digits as its factorization.

13212143531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93741.

The product of its digits is 2160, while the sum is 26.

Adding to 13212143531 its reverse (13534121231), we get a palindrome (26746264762).

The spelling of 13212143531 in words is "thirteen billion, two hundred twelve million, one hundred forty-three thousand, five hundred thirty-one".