131440436527 has 2 divisors, whose sum is σ = 131440436528. Its totient is φ = 131440436526.

The previous prime is 131440436441. The next prime is 131440436557. The reversal of 131440436527 is 725634044131.

It is a strong prime.

It is an emirp because it is prime and its reverse (725634044131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131440436527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131440436527.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131440436557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65720218263 + 65720218264.

It is an arithmetic number, because the mean of its divisors is an integer number (65720218264).

Almost surely, 2^131440436527 is an apocalyptic number.

131440436527 is a deficient number, since it is larger than the sum of its proper divisors (1).

131440436527 is an equidigital number, since it uses as much as digits as its factorization.

131440436527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 131440436527 in words is "one hundred thirty-one billion, four hundred forty million, four hundred thirty-six thousand, five hundred twenty-seven".