131112210 has 16 divisors (see below), whose sum is σ = 314669376. Its totient is φ = 34963248.

The previous prime is 131112199. The next prime is 131112227. The reversal of 131112210 is 12211131.

It is a super-2 number, since 2×131112210² = 34380823222168200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2185174 + ... + 2185233.

It is an arithmetic number, because the mean of its divisors is an integer number (19666836).

Almost surely, 2^131112210 is an apocalyptic number.

131112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131112210 is an abundant number, since it is smaller than the sum of its proper divisors (183557166).

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

131112210 is a wasteful number, since it uses less digits than its factorization.

131112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370417.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 131112210 is about 11450.4240096164. The cubic root of 131112210 is about 508.0202758146.

Adding to 131112210 its reverse (12211131), we get a palindrome (143323341).

The spelling of 131112210 in words is "one hundred thirty-one million, one hundred twelve thousand, two hundred ten".