131310212321 has 4 divisors (see below), whose sum is σ = 133535809200. Its totient is φ = 129084615444.

The previous prime is 131310212273. The next prime is 131310212351. The reversal of 131310212321 is 123212013131.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123212013131 = 977 ⋅126112603.

It is a cyclic number.

It is not a de Polignac number, because 131310212321 - 2¹⁴ = 131310195937 is a prime.

It is a super-2 number, since 2×131310212321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131310212293 and 131310212302.

It is not an unprimeable number, because it can be changed into a prime (131310212351) 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, 1112798351 + ... + 1112798468.

It is an arithmetic number, because the mean of its divisors is an integer number (33383952300).

Almost surely, 2^131310212321 is an apocalyptic number.

It is an amenable number.

131310212321 is a deficient number, since it is larger than the sum of its proper divisors (2225596879).

131310212321 is an equidigital number, since it uses as much as digits as its factorization.

131310212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225596878.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131310212321 its reverse (123212013131), we get a palindrome (254522225452).

The spelling of 131310212321 in words is "one hundred thirty-one billion, three hundred ten million, two hundred twelve thousand, three hundred twenty-one".