131204244 has 12 divisors (see below), whose sum is σ = 306143264. Its totient is φ = 43734744.

The previous prime is 131204221. The next prime is 131204251. The reversal of 131204244 is 442402131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×131204244² = 34429107287223072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131204244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5466832 + ... + 5466855.

Almost surely, 2^131204244 is an apocalyptic number.

It is an amenable number.

131204244 is an abundant number, since it is smaller than the sum of its proper divisors (174939020).

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

131204244 is a wasteful number, since it uses less digits than its factorization.

131204244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10933694 (or 10933692 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 131204244 is about 11454.4421077589. The cubic root of 131204244 is about 508.1391160112.

Adding to 131204244 its reverse (442402131), we get a palindrome (573606375).

The spelling of 131204244 in words is "one hundred thirty-one million, two hundred four thousand, two hundred forty-four".