131027644 has 12 divisors (see below), whose sum is σ = 250143768. Its totient is φ = 59558000.

The previous prime is 131027621. The next prime is 131027651. The reversal of 131027644 is 446720131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488907 + ... + 1488994.

It is an arithmetic number, because the mean of its divisors is an integer number (20845314).

Almost surely, 2^131027644 is an apocalyptic number.

It is an amenable number.

131027644 is a deficient number, since it is larger than the sum of its proper divisors (119116124).

131027644 is a wasteful number, since it uses less digits than its factorization.

131027644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977916 (or 2977914 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 131027644 is about 11446.7307123038. The cubic root of 131027644 is about 507.9110297409.

Adding to 131027644 its reverse (446720131), we get a palindrome (577747775).

The spelling of 131027644 in words is "one hundred thirty-one million, twenty-seven thousand, six hundred forty-four".