131111021189 has 2 divisors, whose sum is σ = 131111021190. Its totient is φ = 131111021188.

The previous prime is 131111021101. The next prime is 131111021191. The reversal of 131111021189 is 981120111131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121891756900 + 9219264289 = 349130^2 + 96017^2 .

It is a cyclic number.

It is not a de Polignac number, because 131111021189 - 2²⁰ = 131109972613 is a prime.

Together with 131111021191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131111021989) 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, 65555510594 + 65555510595.

It is an arithmetic number, because the mean of its divisors is an integer number (65555510595).

Almost surely, 2^131111021189 is an apocalyptic number.

It is an amenable number.

131111021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

131111021189 is an equidigital number, since it uses as much as digits as its factorization.

131111021189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 29.

The spelling of 131111021189 in words is "one hundred thirty-one billion, one hundred eleven million, twenty-one thousand, one hundred eighty-nine".