13131301231 has 4 divisors (see below), whose sum is σ = 13133518200. Its totient is φ = 13129084264.

The previous prime is 13131301229. The next prime is 13131301241. The reversal of 13131301231 is 13210313131.

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 13131301231 - 2¹ = 13131301229 is a prime.

It is a super-2 number, since 2×13131301231² (a number of 21 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 = 13131301199 and 13131301208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131301201) 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, 1099576 + ... + 1111453.

It is an arithmetic number, because the mean of its divisors is an integer number (3283379550).

Almost surely, 2^13131301231 is an apocalyptic number.

13131301231 is a deficient number, since it is larger than the sum of its proper divisors (2216969).

13131301231 is an equidigital number, since it uses as much as digits as its factorization.

13131301231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216968.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13131301231 its reverse (13210313131), we get a palindrome (26341614362).

The spelling of 13131301231 in words is "thirteen billion, one hundred thirty-one million, three hundred one thousand, two hundred thirty-one".