131112212 has 36 divisors (see below), whose sum is σ = 288237600. Its totient is φ = 51081360.

The previous prime is 131112199. The next prime is 131112227. The reversal of 131112212 is 212211131.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15962 + ... + 22737.

It is an arithmetic number, because the mean of its divisors is an integer number (8006600).

Almost surely, 2^131112212 is an apocalyptic number.

It is an amenable number.

131112212 is an abundant number, since it is smaller than the sum of its proper divisors (157125388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131112212 is a wasteful number, since it uses less digits than its factorization.

131112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38732 (or 38719 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 131112212 is about 11450.4240969494. The cubic root of 131112212 is about 508.0202783977.

Adding to 131112212 its reverse (212211131), we get a palindrome (343323343).

The spelling of 131112212 in words is "one hundred thirty-one million, one hundred twelve thousand, two hundred twelve".