13212321303231 has 32 divisors (see below), whose sum is σ = 20604507264000. Its totient is φ = 8344422520704.

The previous prime is 13212321303221. The next prime is 13212321303253. The reversal of 13212321303231 is 13230312321231.

13212321303231 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 2 + 321 + 303 + 2 + 31 = 666.

It is not a de Polignac number, because 13212321303231 - 2²⁵ = 13212287748799 is a prime.

It is a super-2 number, since 2×13212321303231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13212321303195 and 13212321303204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212321303211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22603015 + ... + 23180183.

It is an arithmetic number, because the mean of its divisors is an integer number (643890852000).

Almost surely, 2^{13212321303231} is an apocalyptic number.

13212321303231 is a deficient number, since it is larger than the sum of its proper divisors (7392185960769).

13212321303231 is a wasteful number, since it uses less digits than its factorization.

13212321303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621820 (or 621814 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 13212321303231 its reverse (13230312321231), we get a palindrome (26442633624462).

The spelling of 13212321303231 in words is "thirteen trillion, two hundred twelve billion, three hundred twenty-one million, three hundred three thousand, two hundred thirty-one".