131910865 has 8 divisors (see below), whose sum is σ = 165175488. Its totient is φ = 100940400.

The previous prime is 131910833. The next prime is 131910881. The reversal of 131910865 is 568019131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131910865 - 2⁵ = 131910833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131910865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573411 + ... + 573640.

It is an arithmetic number, because the mean of its divisors is an integer number (20646936).

Almost surely, 2^131910865 is an apocalyptic number.

It is an amenable number.

131910865 is a deficient number, since it is larger than the sum of its proper divisors (33264623).

131910865 is a wasteful number, since it uses less digits than its factorization.

131910865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147079.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 131910865 is about 11485.2455350332. The cubic root of 131910865 is about 509.0497041819.

Adding to 131910865 its reverse (568019131), we get a palindrome (699929996).

The spelling of 131910865 in words is "one hundred thirty-one million, nine hundred ten thousand, eight hundred sixty-five".