131506516 has 24 divisors (see below), whose sum is σ = 239762880. Its totient is φ = 63057600.

The previous prime is 131506511. The next prime is 131506523. The reversal of 131506516 is 615605131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131506511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2881 + ... + 16471.

It is an arithmetic number, because the mean of its divisors is an integer number (9990120).

Almost surely, 2^131506516 is an apocalyptic number.

It is an amenable number.

131506516 is a deficient number, since it is larger than the sum of its proper divisors (108256364).

131506516 is a wasteful number, since it uses less digits than its factorization.

131506516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13695 (or 13693 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 131506516 is about 11467.6290487616. The cubic root of 131506516 is about 508.5290384198.

The spelling of 131506516 in words is "one hundred thirty-one million, five hundred six thousand, five hundred sixteen".