131123043213 has 16 divisors (see below), whose sum is σ = 185664211200. Its totient is φ = 82029136896.

The previous prime is 131123043193. The next prime is 131123043223. The reversal of 131123043213 is 312340321131.

It is not a de Polignac number, because 131123043213 - 2²⁰ = 131121994637 is a prime.

It is a super-2 number, since 2×131123043213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123043223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3797413 + ... + 3831786.

It is an arithmetic number, because the mean of its divisors is an integer number (11604013200).

Almost surely, 2^131123043213 is an apocalyptic number.

It is an amenable number.

131123043213 is a deficient number, since it is larger than the sum of its proper divisors (54541167987).

131123043213 is a wasteful number, since it uses less digits than its factorization.

131123043213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629556.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131123043213 its reverse (312340321131), we get a palindrome (443463364344).

The spelling of 131123043213 in words is "one hundred thirty-one billion, one hundred twenty-three million, forty-three thousand, two hundred thirteen".