131201212 has 24 divisors (see below), whose sum is σ = 232382304. Its totient is φ = 64811712.

The previous prime is 131201197. The next prime is 131201243. The reversal of 131201212 is 212102131.

It is a junction number, because it is equal to n+sod(n) for n = 131201192 and 131201201.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 131098 + ... + 132094.

It is an arithmetic number, because the mean of its divisors is an integer number (9682596).

Almost surely, 2^131201212 is an apocalyptic number.

It is an amenable number.

131201212 is a deficient number, since it is larger than the sum of its proper divisors (101181092).

131201212 is a wasteful number, since it uses less digits than its factorization.

131201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131201212 is about 11454.3097565938. The cubic root of 131201212 is about 508.1352017840.

Adding to 131201212 its reverse (212102131), we get a palindrome (343303343).

The spelling of 131201212 in words is "one hundred thirty-one million, two hundred one thousand, two hundred twelve".