131543516 has 18 divisors (see below), whose sum is σ = 249272352. Its totient is φ = 60712080.

The previous prime is 131543483. The next prime is 131543527. The reversal of 131543516 is 615345131.

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 5 ways as a sum of consecutive naturals, for example, 96620 + ... + 97971.

It is an arithmetic number, because the mean of its divisors is an integer number (13848464).

Almost surely, 2^131543516 is an apocalyptic number.

It is an amenable number.

131543516 is a deficient number, since it is larger than the sum of its proper divisors (117728836).

131543516 is a wasteful number, since it uses less digits than its factorization.

131543516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194621 (or 194606 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 131543516 is about 11469.2421720007. The cubic root of 131543516 is about 508.5767263232.

Adding to 131543516 its reverse (615345131), we get a palindrome (746888647).

The spelling of 131543516 in words is "one hundred thirty-one million, five hundred forty-three thousand, five hundred sixteen".