131601544 has 32 divisors (see below), whose sum is σ = 252771840. Its totient is φ = 64209600.

The previous prime is 131601527. The next prime is 131601593. The reversal of 131601544 is 445106131.

It is a super-3 number, since 3×131601544³ (a number of 25 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 88729 + ... + 90199.

It is an arithmetic number, because the mean of its divisors is an integer number (7899120).

Almost surely, 2^131601544 is an apocalyptic number.

It is an amenable number.

131601544 is a deficient number, since it is larger than the sum of its proper divisors (121170296).

131601544 is a wasteful number, since it uses less digits than its factorization.

131601544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 131601544 is about 11471.7716155788. The cubic root of 131601544 is about 508.6514984156.

Adding to 131601544 its reverse (445106131), we get a palindrome (576707675).

The spelling of 131601544 in words is "one hundred thirty-one million, six hundred one thousand, five hundred forty-four".