131032209999 has 4 divisors (see below), whose sum is σ = 174709613336. Its totient is φ = 87354806664.

The previous prime is 131032209977. The next prime is 131032210021. The reversal of 131032209999 is 999902230131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (131032209977) and next prime (131032210021).

It is not a de Polignac number, because 131032209999 - 2²⁴ = 131015432783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032209199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21838701664 + ... + 21838701669.

It is an arithmetic number, because the mean of its divisors is an integer number (43677403334).

Almost surely, 2^131032209999 is an apocalyptic number.

131032209999 is a deficient number, since it is larger than the sum of its proper divisors (43677403337).

131032209999 is an equidigital number, since it uses as much as digits as its factorization.

131032209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43677403336.

The product of its (nonzero) digits is 236196, while the sum is 48.

The spelling of 131032209999 in words is "one hundred thirty-one billion, thirty-two million, two hundred nine thousand, nine hundred ninety-nine".