131210320032009 has 16 divisors (see below), whose sum is σ = 194401803435840. Its totient is φ = 87466281829920.

The previous prime is 131210320032007. The next prime is 131210320032017. The reversal of 131210320032009 is 900230023012131.

131210320032009 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 10 + 320 + 0 + 320 + 0 + 9 = 666.

It is not a de Polignac number, because 131210320032009 - 2¹ = 131210320032007 is a prime.

It is a super-2 number, since 2×131210320032009² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (131210320032007) 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, 201470487 + ... + 202120700.

It is an arithmetic number, because the mean of its divisors is an integer number (12150112714740).

Almost surely, 2^{131210320032009} is an apocalyptic number.

It is an amenable number.

131210320032009 is a deficient number, since it is larger than the sum of its proper divisors (63191483403831).

131210320032009 is a wasteful number, since it uses less digits than its factorization.

131210320032009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403603237 (or 403603231 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 131210320032009 in words is "one hundred thirty-one trillion, two hundred ten billion, three hundred twenty million, thirty-two thousand, nine".