131322409999 has 16 divisors (see below), whose sum is σ = 151701602976. Its totient is φ = 112351283200.

The previous prime is 131322409997. The next prime is 131322410003. The reversal of 131322409999 is 999904223131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131322409999 - 2¹ = 131322409997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131322409993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2653509 + ... + 2702545.

It is an arithmetic number, because the mean of its divisors is an integer number (9481350186).

Almost surely, 2^131322409999 is an apocalyptic number.

131322409999 is a deficient number, since it is larger than the sum of its proper divisors (20379192977).

131322409999 is a wasteful number, since it uses less digits than its factorization.

131322409999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63386.

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 131322409999 in words is "one hundred thirty-one billion, three hundred twenty-two million, four hundred nine thousand, nine hundred ninety-nine".