131244240212 has 6 divisors (see below), whose sum is σ = 229677420378. Its totient is φ = 65622120104.

The previous prime is 131244240203. The next prime is 131244240217. The reversal of 131244240212 is 212042442131.

It can be written as a sum of positive squares in only one way, i.e., 127430436676 + 3813803536 = 356974^2 + 61756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131244240217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16405530023 + ... + 16405530030.

It is an arithmetic number, because the mean of its divisors is an integer number (38279570063).

Almost surely, 2^131244240212 is an apocalyptic number.

It is an amenable number.

131244240212 is a deficient number, since it is larger than the sum of its proper divisors (98433180166).

131244240212 is a wasteful number, since it uses less digits than its factorization.

131244240212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32811060057 (or 32811060055 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 131244240212 its reverse (212042442131), we get a palindrome (343286682343).

The spelling of 131244240212 in words is "one hundred thirty-one billion, two hundred forty-four million, two hundred forty thousand, two hundred twelve".