131123241213 has 16 divisors (see below), whose sum is σ = 176648169600. Its totient is φ = 86507748800.

The previous prime is 131123241209. The next prime is 131123241239. The reversal of 131123241213 is 312142321131.

It is a cyclic number.

It is not a de Polignac number, because 131123241213 - 2² = 131123241209 is a prime.

It is a super-2 number, since 2×131123241213² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123241253) 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, 522328 + ... + 731486.

It is an arithmetic number, because the mean of its divisors is an integer number (11040510600).

Almost surely, 2^131123241213 is an apocalyptic number.

It is an amenable number.

131123241213 is a deficient number, since it is larger than the sum of its proper divisors (45524928387).

131123241213 is a wasteful number, since it uses less digits than its factorization.

131123241213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211332.

The product of its digits is 864, while the sum is 24.

Adding to 131123241213 its reverse (312142321131), we get a palindrome (443265562344).

The spelling of 131123241213 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred forty-one thousand, two hundred thirteen".