131331212 has 12 divisors (see below), whose sum is σ = 229926816. Its totient is φ = 65637840.

The previous prime is 131331203. The next prime is 131331229. The reversal of 131331212 is 212133131.

131331212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 6662 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (19160568).

Almost surely, 2^131331212 is an apocalyptic number.

It is an amenable number.

131331212 is a deficient number, since it is larger than the sum of its proper divisors (98595604).

131331212 is a wasteful number, since it uses less digits than its factorization.

131331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888 (or 13886 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 131331212 is about 11459.9830715407. The cubic root of 131331212 is about 508.3029740416.

Adding to 131331212 its reverse (212133131), we get a palindrome (343464343).

The spelling of 131331212 in words is "one hundred thirty-one million, three hundred thirty-one thousand, two hundred twelve".