131000231111 has 2 divisors, whose sum is σ = 131000231112. Its totient is φ = 131000231110.

The previous prime is 131000231093. The next prime is 131000231137. The reversal of 131000231111 is 111132000131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131000231111 - 2¹⁴ = 131000214727 is a prime.

It is a super-2 number, since 2×131000231111² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131000231191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500115555 + 65500115556.

It is an arithmetic number, because the mean of its divisors is an integer number (65500115556).

Almost surely, 2^131000231111 is an apocalyptic number.

131000231111 is a deficient number, since it is larger than the sum of its proper divisors (1).

131000231111 is an equidigital number, since it uses as much as digits as its factorization.

131000231111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 131000231111 its reverse (111132000131), we get a palindrome (242132231242).

The spelling of 131000231111 in words is "one hundred thirty-one billion, two hundred thirty-one thousand, one hundred eleven".