13131101213231 has 4 divisors (see below), whose sum is σ = 13159585164264. Its totient is φ = 13102617262200.

The previous prime is 13131101213221. The next prime is 13131101213297. The reversal of 13131101213231 is 13231210113131.

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

It is a cyclic number.

It is not a de Polignac number, because 13131101213231 - 2³⁴ = 13113921344047 is a prime.

It is a super-2 number, since 2×13131101213231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131101213197 and 13131101213206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131101213221) 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, 14241974825 + ... + 14241975746.

It is an arithmetic number, because the mean of its divisors is an integer number (3289896291066).

Almost surely, 2^{13131101213231} is an apocalyptic number.

13131101213231 is a deficient number, since it is larger than the sum of its proper divisors (28483951033).

13131101213231 is an equidigital number, since it uses as much as digits as its factorization.

13131101213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28483951032.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 13131101213231 its reverse (13231210113131), we get a palindrome (26362311326362).

The spelling of 13131101213231 in words is "thirteen trillion, one hundred thirty-one billion, one hundred one million, two hundred thirteen thousand, two hundred thirty-one".