131312032231213 has 4 divisors (see below), whose sum is σ = 131339624594080. Its totient is φ = 131284439868348.

The previous prime is 131312032231129. The next prime is 131312032231273. The reversal of 131312032231213 is 312132230213131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131312032231213 - 2¹⁷ = 131312032100141 is a prime.

It is a super-2 number, since 2×131312032231213² (a number of 29 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 (131312032231273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13796174295 + ... + 13796183812.

It is an arithmetic number, because the mean of its divisors is an integer number (32834906148520).

Almost surely, 2^{131312032231213} is an apocalyptic number.

It is an amenable number.

131312032231213 is a deficient number, since it is larger than the sum of its proper divisors (27592362867).

131312032231213 is an equidigital number, since it uses as much as digits as its factorization.

131312032231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27592362866.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 131312032231213 its reverse (312132230213131), we get a palindrome (443444262444344).

The spelling of 131312032231213 in words is "one hundred thirty-one trillion, three hundred twelve billion, thirty-two million, two hundred thirty-one thousand, two hundred thirteen".