63191 has 4 divisors (see below), whose sum is σ = 65400. Its totient is φ = 60984.

The previous prime is 63179. The next prime is 63197. The reversal of 63191 is 19136.

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 63191 - 2⁶ = 63127 is a prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 63191 parts by 355 straight cuts.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (16350).

2⁶³¹⁹¹ is an apocalyptic number.

63191 is a deficient number, since it is larger than the sum of its proper divisors (2209).

63191 is a wasteful number, since it uses less digits than its factorization.

63191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its digits is 162, while the sum is 20.

The square root of 63191 is about 251.3782011233. The cubic root of 63191 is about 39.8307431464.

The spelling of 63191 in words is "sixty-three thousand, one hundred ninety-one".