131409360287 has 4 divisors (see below), whose sum is σ = 133636637640. Its totient is φ = 129182082936.

The previous prime is 131409360241. The next prime is 131409360293. The reversal of 131409360287 is 782063904131.

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

It is a cyclic number.

It is not a de Polignac number, because 131409360287 - 2¹⁸ = 131409098143 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 (131409360487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113638588 + ... + 1113638705.

It is an arithmetic number, because the mean of its divisors is an integer number (33409159410).

Almost surely, 2^131409360287 is an apocalyptic number.

131409360287 is a deficient number, since it is larger than the sum of its proper divisors (2227277353).

131409360287 is an equidigital number, since it uses as much as digits as its factorization.

131409360287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227277352.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 131409360287 in words is "one hundred thirty-one billion, four hundred nine million, three hundred sixty thousand, two hundred eighty-seven".