131513686 has 8 divisors (see below), whose sum is σ = 197340840. Its totient is φ = 65733408.

The previous prime is 131513677. The next prime is 131513689. The reversal of 131513686 is 686315131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131513689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571 + ... + 16606.

It is an arithmetic number, because the mean of its divisors is an integer number (24667605).

Almost surely, 2^131513686 is an apocalyptic number.

131513686 is a deficient number, since it is larger than the sum of its proper divisors (65827154).

131513686 is a wasteful number, since it uses less digits than its factorization.

131513686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23438.

The product of its digits is 12960, while the sum is 34.

The square root of 131513686 is about 11467.9416636117. The cubic root of 131513686 is about 508.5382802608.

The spelling of 131513686 in words is "one hundred thirty-one million, five hundred thirteen thousand, six hundred eighty-six".