131211213323 has 4 divisors (see below), whose sum is σ = 131638611720. Its totient is φ = 130783814928.

The previous prime is 131211213319. The next prime is 131211213359. The reversal of 131211213323 is 323312112131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323312112131 = 94207 ⋅3431933.

It is a cyclic number.

It is not a de Polignac number, because 131211213323 - 2² = 131211213319 is a prime.

It is a super-3 number, since 3×131211213323³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131211213823) 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, 213698738 + ... + 213699351.

It is an arithmetic number, because the mean of its divisors is an integer number (32909652930).

Almost surely, 2^131211213323 is an apocalyptic number.

131211213323 is a deficient number, since it is larger than the sum of its proper divisors (427398397).

131211213323 is an equidigital number, since it uses as much as digits as its factorization.

131211213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427398396.

The product of its digits is 648, while the sum is 23.

Adding to 131211213323 its reverse (323312112131), we get a palindrome (454523325454).

The spelling of 131211213323 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred thirteen thousand, three hundred twenty-three".