131332320331 has 4 divisors (see below), whose sum is σ = 131367809664. Its totient is φ = 131296831000.

The previous prime is 131332320323. The next prime is 131332320337. The reversal of 131332320331 is 133023233131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131332320331 - 2³ = 131332320323 is a prime.

It is a super-2 number, since 2×131332320331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131332320296 and 131332320305.

It is not an unprimeable number, because it can be changed into a prime (131332320337) 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, 17739115 + ... + 17746516.

It is an arithmetic number, because the mean of its divisors is an integer number (32841952416).

Almost surely, 2^131332320331 is an apocalyptic number.

131332320331 is a deficient number, since it is larger than the sum of its proper divisors (35489333).

131332320331 is an equidigital number, since it uses as much as digits as its factorization.

131332320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35489332.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 131332320331 its reverse (133023233131), we get a palindrome (264355553462).

The spelling of 131332320331 in words is "one hundred thirty-one billion, three hundred thirty-two million, three hundred twenty thousand, three hundred thirty-one".