131513044 has 12 divisors (see below), whose sum is σ = 247851604. Its totient is φ = 60698304.

The previous prime is 131513033. The next prime is 131513069. The reversal of 131513044 is 440315131.

It can be written as a sum of positive squares in 2 ways, for example, as 59907600 + 71605444 = 7740^2 + 8462^2 .

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, 1264497 + ... + 1264600.

Almost surely, 2^131513044 is an apocalyptic number.

It is an amenable number.

131513044 is a deficient number, since it is larger than the sum of its proper divisors (116338560).

131513044 is a wasteful number, since it uses less digits than its factorization.

131513044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529114 (or 2529112 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131513044 is about 11467.9136725038. The cubic root of 131513044 is about 508.5374527624.

Adding to 131513044 its reverse (440315131), we get a palindrome (571828175).

The spelling of 131513044 in words is "one hundred thirty-one million, five hundred thirteen thousand, forty-four".