4891031 has 4 divisors (see below), whose sum is σ = 4941552. Its totient is φ = 4840512.

The previous prime is 4891027. The next prime is 4891039. The reversal of 4891031 is 1301984.

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 4891031 - 2² = 4891027 is a prime.

It is a super-2 number, since 2×4891031² = 47844368485922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891039) 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 3 ways as a sum of consecutive naturals, for example, 25115 + ... + 25308.

It is an arithmetic number, because the mean of its divisors is an integer number (1235388).

Almost surely, 2^4891031 is an apocalyptic number.

4891031 is a deficient number, since it is larger than the sum of its proper divisors (50521).

4891031 is an equidigital number, since it uses as much as digits as its factorization.

4891031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50520.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 4891031 is about 2211.5675436215. The cubic root of 4891031 is about 169.7462303672.

The spelling of 4891031 in words is "four million, eight hundred ninety-one thousand, thirty-one".