131242544 has 10 divisors (see below), whose sum is σ = 254282460. Its totient is φ = 65621264.

The previous prime is 131242541. The next prime is 131242571. The reversal of 131242544 is 445242131.

It is not an unprimeable number, because it can be changed into a prime (131242541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101314 + ... + 4101345.

It is an arithmetic number, because the mean of its divisors is an integer number (25428246).

Almost surely, 2^131242544 is an apocalyptic number.

It is an amenable number.

131242544 is a deficient number, since it is larger than the sum of its proper divisors (123039916).

131242544 is an equidigital number, since it uses as much as digits as its factorization.

131242544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202667 (or 8202661 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 131242544 is about 11456.1138262502. The cubic root of 131242544 is about 508.1885550490.

Adding to 131242544 its reverse (445242131), we get a palindrome (576484675).

The spelling of 131242544 in words is "one hundred thirty-one million, two hundred forty-two thousand, five hundred forty-four".