131242212 has 36 divisors (see below), whose sum is σ = 333505536. Its totient is φ = 43516080.

The previous prime is 131242201. The next prime is 131242217. The reversal of 131242212 is 212242131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (131242217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2668 + ... + 16419.

Almost surely, 2^131242212 is an apocalyptic number.

131242212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131242212 is an abundant number, since it is smaller than the sum of its proper divisors (202263324).

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

131242212 is a wasteful number, since it uses less digits than its factorization.

131242212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19288 (or 19283 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 131242212 is about 11456.0993361615. The cubic root of 131242212 is about 508.1881265326.

Adding to 131242212 its reverse (212242131), we get a palindrome (343484343).

The spelling of 131242212 in words is "one hundred thirty-one million, two hundred forty-two thousand, two hundred twelve".