131013122231 has 2 divisors, whose sum is σ = 131013122232. Its totient is φ = 131013122230.

The previous prime is 131013122213. The next prime is 131013122249. The reversal of 131013122231 is 132221310131.

It is a happy number.

Together with previous prime (131013122213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (131013122213) and next prime (131013122249).

It is an emirp because it is prime and its reverse (132221310131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131013122231 is a prime.

It is a super-2 number, since 2×131013122231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131013112231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65506561115 + 65506561116.

It is an arithmetic number, because the mean of its divisors is an integer number (65506561116).

Almost surely, 2^131013122231 is an apocalyptic number.

131013122231 is a deficient number, since it is larger than the sum of its proper divisors (1).

131013122231 is an equidigital number, since it uses as much as digits as its factorization.

131013122231 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 20.

Adding to 131013122231 its reverse (132221310131), we get a palindrome (263234432362).

The spelling of 131013122231 in words is "one hundred thirty-one billion, thirteen million, one hundred twenty-two thousand, two hundred thirty-one".