131332331121 has 4 divisors (see below), whose sum is σ = 175109774832. Its totient is φ = 87554887412.

The previous prime is 131332331113. The next prime is 131332331161. The reversal of 131332331121 is 121133233131.

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 131332331121 - 2³ = 131332331113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131332331091 and 131332331100.

It is not an unprimeable number, because it can be changed into a prime (131332331101) 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, 21888721851 + ... + 21888721856.

It is an arithmetic number, because the mean of its divisors is an integer number (43777443708).

Almost surely, 2^131332331121 is an apocalyptic number.

It is an amenable number.

131332331121 is a deficient number, since it is larger than the sum of its proper divisors (43777443711).

131332331121 is an equidigital number, since it uses as much as digits as its factorization.

131332331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43777443710.

The product of its digits is 972, while the sum is 24.

Adding to 131332331121 its reverse (121133233131), we get a palindrome (252465564252).

The spelling of 131332331121 in words is "one hundred thirty-one billion, three hundred thirty-two million, three hundred thirty-one thousand, one hundred twenty-one".