361181 has 8 divisors (see below), whose sum is σ = 380928. Its totient is φ = 342000.

The previous prime is 361159. The next prime is 361183. The reversal of 361181 is 181163.

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 361181 - 2¹⁴ = 344797 is a prime.

It is a super-2 number, since 2×361181² = 260903429522, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361181.

It is not an unprimeable number, because it can be changed into a prime (361183) 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, 1796 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (47616).

2³⁶¹¹⁸¹ is an apocalyptic number.

361181 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

361181 is a deficient number, since it is larger than the sum of its proper divisors (19747).

361181 is a wasteful number, since it uses less digits than its factorization.

361181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its digits is 144, while the sum is 20.

The square root of 361181 is about 600.9833608346. The cubic root of 361181 is about 71.2155717530.

Adding to 361181 its sum of digits (20), we get a square (361201 = 601²).

It can be divided in two parts, 361 and 181, that multiplied together give a triangular number (65341 = T₃₆₁).

The spelling of 361181 in words is "three hundred sixty-one thousand, one hundred eighty-one".