131332320121 has 4 divisors (see below), whose sum is σ = 131336556544. Its totient is φ = 131328083700.

The previous prime is 131332320071. The next prime is 131332320169. The reversal of 131332320121 is 121023233131.

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 131332320121 - 2¹⁷ = 131332189049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131332320092 and 131332320101.

It is not an unprimeable number, because it can be changed into a prime (131332320181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071365 + ... + 2133826.

It is an arithmetic number, because the mean of its divisors is an integer number (32834139136).

Almost surely, 2^131332320121 is an apocalyptic number.

It is an amenable number.

131332320121 is a deficient number, since it is larger than the sum of its proper divisors (4236423).

131332320121 is an equidigital number, since it uses as much as digits as its factorization.

131332320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236422.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131332320121 its reverse (121023233131), we get a palindrome (252355553252).

The spelling of 131332320121 in words is "one hundred thirty-one billion, three hundred thirty-two million, three hundred twenty thousand, one hundred twenty-one".