131542706 has 4 divisors (see below), whose sum is σ = 197314062. Its totient is φ = 65771352.

The previous prime is 131542699. The next prime is 131542711. The reversal of 131542706 is 607245131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119355625 + 12187081 = 10925^2 + 3491^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 32885675 + ... + 32885678.

Almost surely, 2^131542706 is an apocalyptic number.

131542706 is a deficient number, since it is larger than the sum of its proper divisors (65771356).

131542706 is an equidigital number, since it uses as much as digits as its factorization.

131542706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65771355.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 131542706 is about 11469.2068601102. The cubic root of 131542706 is about 508.5756824405.

Adding to 131542706 its reverse (607245131), we get a palindrome (738787837).

The spelling of 131542706 in words is "one hundred thirty-one million, five hundred forty-two thousand, seven hundred six".