131230111 has 12 divisors (see below), whose sum is σ = 138397392. Its totient is φ = 124196864.

The previous prime is 131230087. The next prime is 131230117. The reversal of 131230111 is 111032131.

It is not a de Polignac number, because 131230111 - 2¹⁷ = 131099039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131230091 and 131230100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230117) 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 in 11 ways as a sum of consecutive naturals, for example, 510495 + ... + 510751.

It is an arithmetic number, because the mean of its divisors is an integer number (11533116).

Almost surely, 2^131230111 is an apocalyptic number.

131230111 is a deficient number, since it is larger than the sum of its proper divisors (7167281).

131230111 is an equidigital number, since it uses as much as digits as its factorization.

131230111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131230111 is about 11455.5711773792. The cubic root of 131230111 is about 508.1725071334.

Adding to 131230111 its reverse (111032131), we get a palindrome (242262242).

The spelling of 131230111 in words is "one hundred thirty-one million, two hundred thirty thousand, one hundred eleven".