491232111 has 16 divisors (see below), whose sum is σ = 680154720. Its totient is φ = 315118080.

The previous prime is 491232089. The next prime is 491232121. The reversal of 491232111 is 111232194.

It is not a de Polignac number, because 491232111 - 2⁶ = 491232047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18376 + ... + 36333.

It is an arithmetic number, because the mean of its divisors is an integer number (42509670).

Almost surely, 2^491232111 is an apocalyptic number.

491232111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

491232111 is a deficient number, since it is larger than the sum of its proper divisors (188922609).

491232111 is a wasteful number, since it uses less digits than its factorization.

491232111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54826.

The product of its digits is 432, while the sum is 24.

The square root of 491232111 is about 22163.7566987187. The cubic root of 491232111 is about 789.0337548468.

The spelling of 491232111 in words is "four hundred ninety-one million, two hundred thirty-two thousand, one hundred eleven".