131440434529 has 2 divisors, whose sum is σ = 131440434530. Its totient is φ = 131440434528.

The previous prime is 131440434491. The next prime is 131440434583. The reversal of 131440434529 is 925434044131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131438877025 + 1557504 = 362545^2 + 1248^2 .

It is a cyclic number.

It is not a de Polignac number, because 131440434529 - 2¹⁵ = 131440401761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131440434491 and 131440434500.

It is not a weakly prime, because it can be changed into another prime (131440434929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65720217264 + 65720217265.

It is an arithmetic number, because the mean of its divisors is an integer number (65720217265).

Almost surely, 2^131440434529 is an apocalyptic number.

It is an amenable number.

131440434529 is a deficient number, since it is larger than the sum of its proper divisors (1).

131440434529 is an equidigital number, since it uses as much as digits as its factorization.

131440434529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 131440434529 in words is "one hundred thirty-one billion, four hundred forty million, four hundred thirty-four thousand, five hundred twenty-nine".