131688362 has 16 divisors (see below), whose sum is σ = 220064040. Its totient is φ = 58683072.

The previous prime is 131688343. The next prime is 131688367. The reversal of 131688362 is 263886131.

It can be written as a sum of positive squares in 4 ways, for example, as 43309561 + 88378801 = 6581^2 + 9401^2 .

It is not an unprimeable number, because it can be changed into a prime (131688367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86573 + ... + 88080.

Almost surely, 2^131688362 is an apocalyptic number.

131688362 is a deficient number, since it is larger than the sum of its proper divisors (88375678).

131688362 is a wasteful number, since it uses less digits than its factorization.

131688362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174697.

The product of its digits is 41472, while the sum is 38.

The square root of 131688362 is about 11475.5549756864. The cubic root of 131688362 is about 508.7633268870.

The spelling of 131688362 in words is "one hundred thirty-one million, six hundred eighty-eight thousand, three hundred sixty-two".