131122233161 has 2 divisors, whose sum is σ = 131122233162. Its totient is φ = 131122233160.

The previous prime is 131122233149. The next prime is 131122233169. The reversal of 131122233161 is 161332221131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124820890000 + 6301343161 = 353300^2 + 79381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131122233161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131122233161.

It is not a weakly prime, because it can be changed into another prime (131122233169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561116580 + 65561116581.

It is an arithmetic number, because the mean of its divisors is an integer number (65561116581).

Almost surely, 2^131122233161 is an apocalyptic number.

It is an amenable number.

131122233161 is a deficient number, since it is larger than the sum of its proper divisors (1).

131122233161 is an equidigital number, since it uses as much as digits as its factorization.

131122233161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

Adding to 131122233161 its reverse (161332221131), we get a palindrome (292454454292).

The spelling of 131122233161 in words is "one hundred thirty-one billion, one hundred twenty-two million, two hundred thirty-three thousand, one hundred sixty-one".