63181 has 8 divisors (see below), whose sum is σ = 68544. Its totient is φ = 58080.

The previous prime is 63179. The next prime is 63197. The reversal of 63181 is 18136.

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 63181 - 2¹ = 63179 is a prime.

It is a super-2 number, since 2×63181² = 7983677522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

63181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910 + ... + 976.

It is an arithmetic number, because the mean of its divisors is an integer number (8568).

2⁶³¹⁸¹ is an apocalyptic number.

It is an amenable number.

63181 is a deficient number, since it is larger than the sum of its proper divisors (5363).

63181 is a wasteful number, since it uses less digits than its factorization.

63181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131.

The product of its digits is 144, while the sum is 19.

The square root of 63181 is about 251.3583099880. The cubic root of 63181 is about 39.8286419588.

The spelling of 63181 in words is "sixty-three thousand, one hundred eighty-one".