131040452009 has 2 divisors, whose sum is σ = 131040452010. Its totient is φ = 131040452008.

The previous prime is 131040452003. The next prime is 131040452143. The reversal of 131040452009 is 900254040131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130860892009 + 179560000 = 361747^2 + 13400^2 .

It is an emirp because it is prime and its reverse (900254040131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131040452009 - 2⁸ = 131040451753 is a prime.

It is not a weakly prime, because it can be changed into another prime (131040452003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65520226004 + 65520226005.

It is an arithmetic number, because the mean of its divisors is an integer number (65520226005).

Almost surely, 2^131040452009 is an apocalyptic number.

It is an amenable number.

131040452009 is a deficient number, since it is larger than the sum of its proper divisors (1).

131040452009 is an equidigital number, since it uses as much as digits as its factorization.

131040452009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 131040452009 in words is "one hundred thirty-one billion, forty million, four hundred fifty-two thousand, nine".