13131433231 has 8 divisors (see below), whose sum is σ = 15212933024. Its totient is φ = 11101328640.

The previous prime is 13131433207. The next prime is 13131433241. The reversal of 13131433231 is 13233413131.

13131433231 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 13131433231 - 2¹⁷ = 13131302159 is a prime.

It is a super-2 number, since 2×13131433231² (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 = 13131433196 and 13131433205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131433241) 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, 12848250 + ... + 12849271.

It is an arithmetic number, because the mean of its divisors is an integer number (1901616628).

Almost surely, 2^13131433231 is an apocalyptic number.

13131433231 is a deficient number, since it is larger than the sum of its proper divisors (2081499793).

13131433231 is an equidigital number, since it uses as much as digits as its factorization.

13131433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25697601.

The product of its digits is 1944, while the sum is 25.

Adding to 13131433231 its reverse (13233413131), we get a palindrome (26364846362).

The spelling of 13131433231 in words is "thirteen billion, one hundred thirty-one million, four hundred thirty-three thousand, two hundred thirty-one".