481971111 has 4 divisors (see below), whose sum is σ = 642628152. Its totient is φ = 321314072.

The previous prime is 481971089. The next prime is 481971137. The reversal of 481971111 is 111179184.

481971111 is nontrivially palindromic in base 2.

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 481971111 - 2¹⁰ = 481970087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481971151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80328516 + ... + 80328521.

It is an arithmetic number, because the mean of its divisors is an integer number (160657038).

Almost surely, 2^481971111 is an apocalyptic number.

481971111 is a deficient number, since it is larger than the sum of its proper divisors (160657041).

481971111 is a wasteful number, since it uses less digits than its factorization.

481971111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160657040.

The product of its digits is 2016, while the sum is 33.

The square root of 481971111 is about 21953.8404612951. The cubic root of 481971111 is about 784.0438198947.

The spelling of 481971111 in words is "four hundred eighty-one million, nine hundred seventy-one thousand, one hundred eleven".