131552440424 has 16 divisors (see below), whose sum is σ = 250704446820. Its totient is φ = 64697921280.

The previous prime is 131552440423. The next prime is 131552440447. The reversal of 131552440424 is 424044255131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128529420100 + 3023020324 = 358510^2 + 54982^2 .

It is not an unprimeable number, because it can be changed into a prime (131552440423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134786849 + ... + 134787824.

Almost surely, 2^131552440424 is an apocalyptic number.

It is an amenable number.

131552440424 is a deficient number, since it is larger than the sum of its proper divisors (119152006396).

131552440424 is a wasteful number, since it uses less digits than its factorization.

131552440424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269574740 (or 269574736 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 131552440424 its reverse (424044255131), we get a palindrome (555596695555).

The spelling of 131552440424 in words is "one hundred thirty-one billion, five hundred fifty-two million, four hundred forty thousand, four hundred twenty-four".