131220241444 has 24 divisors (see below), whose sum is σ = 249714836280. Its totient is φ = 60081762816.

The previous prime is 131220241433. The next prime is 131220241499. The reversal of 131220241444 is 444142022131.

131220241444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18130622500 + 113089618944 = 134650^2 + 336288^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26074639 + ... + 26079670.

It is an arithmetic number, because the mean of its divisors is an integer number (10404784845).

Almost surely, 2^131220241444 is an apocalyptic number.

It is an amenable number.

131220241444 is a deficient number, since it is larger than the sum of its proper divisors (118494594836).

131220241444 is a wasteful number, since it uses less digits than its factorization.

131220241444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52154367 (or 52154365 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 131220241444 its reverse (444142022131), we get a palindrome (575362263575).

The spelling of 131220241444 in words is "one hundred thirty-one billion, two hundred twenty million, two hundred forty-one thousand, four hundred forty-four".