131324443009 has 2 divisors, whose sum is σ = 131324443010. Its totient is φ = 131324443008.

The previous prime is 131324442983. The next prime is 131324443013. The reversal of 131324443009 is 900344423131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103537219984 + 27787223025 = 321772^2 + 166695^2 .

It is a cyclic number.

It is not a de Polignac number, because 131324443009 - 2¹⁹ = 131323918721 is a prime.

It is a super-2 number, since 2×131324443009² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131324443609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65662221504 + 65662221505.

It is an arithmetic number, because the mean of its divisors is an integer number (65662221505).

Almost surely, 2^131324443009 is an apocalyptic number.

It is an amenable number.

131324443009 is a deficient number, since it is larger than the sum of its proper divisors (1).

131324443009 is an equidigital number, since it uses as much as digits as its factorization.

131324443009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 131324443009 in words is "one hundred thirty-one billion, three hundred twenty-four million, four hundred forty-three thousand, nine".