131542456 has 8 divisors (see below), whose sum is σ = 246642120. Its totient is φ = 65771224.

The previous prime is 131542441. The next prime is 131542457. The reversal of 131542456 is 654245131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131542457) 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, 8221396 + ... + 8221411.

It is an arithmetic number, because the mean of its divisors is an integer number (30830265).

Almost surely, 2^131542456 is an apocalyptic number.

It is an amenable number.

131542456 is a deficient number, since it is larger than the sum of its proper divisors (115099664).

131542456 is a wasteful number, since it uses less digits than its factorization.

131542456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16442813 (or 16442809 counting only the distinct ones).

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

The square root of 131542456 is about 11469.1959613567. The cubic root of 131542456 is about 508.5753602536.

Adding to 131542456 its reverse (654245131), we get a palindrome (785787587).

The spelling of 131542456 in words is "one hundred thirty-one million, five hundred forty-two thousand, four hundred fifty-six".