131545706 has 4 divisors (see below), whose sum is σ = 197318562. Its totient is φ = 65772852.

The previous prime is 131545703. The next prime is 131545789. The reversal of 131545706 is 607545131.

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., 71250481 + 60295225 = 8441^2 + 7765^2 .

It is a super-3 number, since 3×131545706³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131545703) 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 as a sum of consecutive naturals, namely, 32886425 + ... + 32886428.

Almost surely, 2^131545706 is an apocalyptic number.

131545706 is a deficient number, since it is larger than the sum of its proper divisors (65772856).

131545706 is an equidigital number, since it uses as much as digits as its factorization.

131545706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65772855.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 131545706 is about 11469.3376443455. The cubic root of 131545706 is about 508.5795486512.

The spelling of 131545706 in words is "one hundred thirty-one million, five hundred forty-five thousand, seven hundred six".