131551212 has 48 divisors (see below), whose sum is σ = 347970560. Its totient is φ = 38346048.

The previous prime is 131551207. The next prime is 131551223. The reversal of 131551212 is 212155131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19228 + ... + 25155.

Almost surely, 2^131551212 is an apocalyptic number.

131551212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131551212 is an abundant number, since it is smaller than the sum of its proper divisors (216419348).

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

131551212 is a wasteful number, since it uses less digits than its factorization.

131551212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44422 (or 44420 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 131551212 is about 11469.5776731316. The cubic root of 131551212 is about 508.5866442836.

The spelling of 131551212 in words is "one hundred thirty-one million, five hundred fifty-one thousand, two hundred twelve".