131320233009 has 48 divisors (see below), whose sum is σ = 228262195200. Its totient is φ = 71068853088.

The previous prime is 131320233007. The next prime is 131320233059. The reversal of 131320233009 is 900332023131.

131320233009 is a `hidden beast` number, since 1 + 3 + 1 + 320 + 2 + 330 + 0 + 9 = 666.

It is not a de Polignac number, because 131320233009 - 2¹ = 131320233007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131320233007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4364832 + ... + 4394814.

It is an arithmetic number, because the mean of its divisors is an integer number (4755462400).

Almost surely, 2^131320233009 is an apocalyptic number.

131320233009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131320233009 is a deficient number, since it is larger than the sum of its proper divisors (96941962191).

131320233009 is a wasteful number, since it uses less digits than its factorization.

131320233009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33674 (or 33671 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The spelling of 131320233009 in words is "one hundred thirty-one billion, three hundred twenty million, two hundred thirty-three thousand, nine".