131801289 has 16 divisors (see below), whose sum is σ = 191104128. Its totient is φ = 80462592.

The previous prime is 131801273. The next prime is 131801353. The reversal of 131801289 is 982108131.

It is not a de Polignac number, because 131801289 - 2⁴ = 131801273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131806289) 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, 33037 + ... + 36810.

It is an arithmetic number, because the mean of its divisors is an integer number (11944008).

Almost surely, 2^131801289 is an apocalyptic number.

It is an amenable number.

131801289 is a deficient number, since it is larger than the sum of its proper divisors (59302839).

131801289 is a wasteful number, since it uses less digits than its factorization.

131801289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69904.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 131801289 is about 11480.4742497860. The cubic root of 131801289 is about 508.9087123018.

The spelling of 131801289 in words is "one hundred thirty-one million, eight hundred one thousand, two hundred eighty-nine".