131230212 has 12 divisors (see below), whose sum is σ = 306203856. Its totient is φ = 43743400.

The previous prime is 131230201. The next prime is 131230241. The reversal of 131230212 is 212032131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 131230191 and 131230200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5467914 + ... + 5467937.

It is an arithmetic number, because the mean of its divisors is an integer number (25516988).

Almost surely, 2^131230212 is an apocalyptic number.

131230212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131230212 is an abundant number, since it is smaller than the sum of its proper divisors (174973644).

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

131230212 is a wasteful number, since it uses less digits than its factorization.

131230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935858 (or 10935856 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131230212 is about 11455.5755857137. The cubic root of 131230212 is about 508.1726375034.

Adding to 131230212 its reverse (212032131), we get a palindrome (343262343).

The spelling of 131230212 in words is "one hundred thirty-one million, two hundred thirty thousand, two hundred twelve".