131031202231 has 2 divisors, whose sum is σ = 131031202232. Its totient is φ = 131031202230.

The previous prime is 131031202217. The next prime is 131031202241. The reversal of 131031202231 is 132202130131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131031202231 - 2⁷ = 131031202103 is a prime.

It is a super-2 number, since 2×131031202231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131031202199 and 131031202208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131031202241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515601115 + 65515601116.

It is an arithmetic number, because the mean of its divisors is an integer number (65515601116).

Almost surely, 2^131031202231 is an apocalyptic number.

131031202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031202231 is an equidigital number, since it uses as much as digits as its factorization.

131031202231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131031202231 its reverse (132202130131), we get a palindrome (263233332362).

The spelling of 131031202231 in words is "one hundred thirty-one billion, thirty-one million, two hundred two thousand, two hundred thirty-one".