165000131 has 8 divisors (see below), whose sum is σ = 169793424. Its totient is φ = 160224480.

The previous prime is 165000119. The next prime is 165000149. The reversal of 165000131 is 131000561.

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

It is a cyclic number.

It is not a de Polignac number, because 165000131 - 2¹⁸ = 164737987 is a prime.

It is a super-2 number, since 2×165000131² = 54450086460034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165000191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15896 + ... + 24138.

It is an arithmetic number, because the mean of its divisors is an integer number (21224178).

Almost surely, 2^165000131 is an apocalyptic number.

165000131 is a deficient number, since it is larger than the sum of its proper divisors (4793293).

165000131 is an equidigital number, since it uses as much as digits as its factorization.

165000131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 165000131 is about 12845.2376778322. The cubic root of 165000131 is about 548.4808003967.

Adding to 165000131 its reverse (131000561), we get a palindrome (296000692).

The spelling of 165000131 in words is "one hundred sixty-five million, one hundred thirty-one", and thus it is an aban number.