131332220231 has 2 divisors, whose sum is σ = 131332220232. Its totient is φ = 131332220230.

The previous prime is 131332220183. The next prime is 131332220233. The reversal of 131332220231 is 132022233131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131332220231 is a prime.

It is a super-2 number, since 2×131332220231² (a number of 23 digits) contains 22 as substring.

Together with 131332220233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131332220197 and 131332220206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131332220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666110115 + 65666110116.

It is an arithmetic number, because the mean of its divisors is an integer number (65666110116).

Almost surely, 2^131332220231 is an apocalyptic number.

131332220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131332220231 is an equidigital number, since it uses as much as digits as its factorization.

131332220231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 131332220231 its reverse (132022233131), we get a palindrome (263354453362).

The spelling of 131332220231 in words is "one hundred thirty-one billion, three hundred thirty-two million, two hundred twenty thousand, two hundred thirty-one".