13131002231 has 4 divisors (see below), whose sum is σ = 13206904152. Its totient is φ = 13055100312.

The previous prime is 13131002221. The next prime is 13131002237. The reversal of 13131002231 is 13220013131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13220013131 = 13 ⋅1016924087.

It is a cyclic number.

It is not a de Polignac number, because 13131002231 - 2¹⁰ = 13131001207 is a prime.

It is a super-2 number, since 2×13131002231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131002237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37950701 + ... + 37951046.

It is an arithmetic number, because the mean of its divisors is an integer number (3301726038).

Almost surely, 2^13131002231 is an apocalyptic number.

13131002231 is a deficient number, since it is larger than the sum of its proper divisors (75901921).

13131002231 is an equidigital number, since it uses as much as digits as its factorization.

13131002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75901920.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13131002231 its reverse (13220013131), we get a palindrome (26351015362).

The spelling of 13131002231 in words is "thirteen billion, one hundred thirty-one million, two thousand, two hundred thirty-one".