131322232133 has 4 divisors (see below), whose sum is σ = 131322959328. Its totient is φ = 131321504940.

The previous prime is 131322232127. The next prime is 131322232177. The reversal of 131322232133 is 331232223131.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 331232223131 = 157 ⋅2109759383.

It is a cyclic number.

It is not a de Polignac number, because 131322232133 - 2²⁸ = 131053796677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131322232103) 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, 137288 + ... + 530558.

It is an arithmetic number, because the mean of its divisors is an integer number (32830739832).

Almost surely, 2^131322232133 is an apocalyptic number.

It is an amenable number.

131322232133 is a deficient number, since it is larger than the sum of its proper divisors (727195).

131322232133 is an equidigital number, since it uses as much as digits as its factorization.

131322232133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727194.

The product of its digits is 3888, while the sum is 26.

Adding to 131322232133 its reverse (331232223131), we get a palindrome (462554455264).

The spelling of 131322232133 in words is "one hundred thirty-one billion, three hundred twenty-two million, two hundred thirty-two thousand, one hundred thirty-three".