131230230231213 has 24 divisors (see below), whose sum is σ = 190346931230456. Its totient is φ = 87121231948800.

The previous prime is 131230230231209. The next prime is 131230230231253. The reversal of 131230230231213 is 312132032032131.

131230230231213 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 30 + 2 + 302 + 312 + 13 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40904556374889 + 90325673856324 = 6395667^2 + 9503982^2 .

It is not a de Polignac number, because 131230230231213 - 2² = 131230230231209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230230231253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74034843 + ... + 75786663.

Almost surely, 2^{131230230231213} is an apocalyptic number.

It is an amenable number.

131230230231213 is a deficient number, since it is larger than the sum of its proper divisors (59116700999243).

131230230231213 is a wasteful number, since it uses less digits than its factorization.

131230230231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786605 (or 1786602 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 131230230231213 its reverse (312132032032131), we get a palindrome (443362262263344).

The spelling of 131230230231213 in words is "one hundred thirty-one trillion, two hundred thirty billion, two hundred thirty million, two hundred thirty-one thousand, two hundred thirteen".