131542546 has 4 divisors (see below), whose sum is σ = 197313822. Its totient is φ = 65771272.

The previous prime is 131542513. The next prime is 131542597. The reversal of 131542546 is 645245131.

It is a happy number.

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., 121550625 + 9991921 = 11025^2 + 3161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32885635 + ... + 32885638.

Almost surely, 2^131542546 is an apocalyptic number.

131542546 is a deficient number, since it is larger than the sum of its proper divisors (65771276).

131542546 is an equidigital number, since it uses as much as digits as its factorization.

131542546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65771275.

The product of its digits is 14400, while the sum is 31.

The square root of 131542546 is about 11469.1998849091. The cubic root of 131542546 is about 508.5754762409.

Adding to 131542546 its reverse (645245131), we get a palindrome (776787677).

The spelling of 131542546 in words is "one hundred thirty-one million, five hundred forty-two thousand, five hundred forty-six".