131256212 has 12 divisors (see below), whose sum is σ = 230889876. Its totient is φ = 65287680.

The previous prime is 131256187. The next prime is 131256227. The reversal of 131256212 is 212652131.

It can be written as a sum of positive squares in 2 ways, for example, as 52330756 + 78925456 = 7234^2 + 8884^2 .

It is a congruent number.

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, 84239 + ... + 85782.

It is an arithmetic number, because the mean of its divisors is an integer number (19240823).

Almost surely, 2^131256212 is an apocalyptic number.

It is an amenable number.

131256212 is a deficient number, since it is larger than the sum of its proper divisors (99633664).

131256212 is a wasteful number, since it uses less digits than its factorization.

131256212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170218 (or 170216 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 131256212 is about 11456.7103480886. The cubic root of 131256212 is about 508.2061958735.

The spelling of 131256212 in words is "one hundred thirty-one million, two hundred fifty-six thousand, two hundred twelve".