131240212 has 6 divisors (see below), whose sum is σ = 229670378. Its totient is φ = 65620104.

The previous prime is 131240209. The next prime is 131240281. The reversal of 131240212 is 212042131.

It can be written as a sum of positive squares in only one way, i.e., 85488516 + 45751696 = 9246^2 + 6764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16405023 + ... + 16405030.

Almost surely, 2^131240212 is an apocalyptic number.

It is an amenable number.

131240212 is a deficient number, since it is larger than the sum of its proper divisors (98430166).

131240212 is a wasteful number, since it uses less digits than its factorization.

131240212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32810057 (or 32810055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131240212 is about 11456.0120460831. The cubic root of 131240212 is about 508.1855450933.

Adding to 131240212 its reverse (212042131), we get a palindrome (343282343).

The spelling of 131240212 in words is "one hundred thirty-one million, two hundred forty thousand, two hundred twelve".