131440436441 has 2 divisors, whose sum is σ = 131440436442. Its totient is φ = 131440436440.

The previous prime is 131440436431. The next prime is 131440436527. The reversal of 131440436441 is 144634044131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120394426441 + 11046010000 = 346979^2 + 105100^2 .

It is an emirp because it is prime and its reverse (144634044131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131440436441 - 2⁶ = 131440436377 is a prime.

It is not a weakly prime, because it can be changed into another prime (131440436411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65720218220 + 65720218221.

It is an arithmetic number, because the mean of its divisors is an integer number (65720218221).

Almost surely, 2^131440436441 is an apocalyptic number.

It is an amenable number.

131440436441 is a deficient number, since it is larger than the sum of its proper divisors (1).

131440436441 is an equidigital number, since it uses as much as digits as its factorization.

131440436441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 131440436441 in words is "one hundred thirty-one billion, four hundred forty million, four hundred thirty-six thousand, four hundred forty-one".