4312891 has 8 divisors (see below), whose sum is σ = 4909824. Its totient is φ = 3750120.

The previous prime is 4312879. The next prime is 4312907. The reversal of 4312891 is 1982134.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4312891 - 2⁵ = 4312859 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4312811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8271 + ... + 8776.

It is an arithmetic number, because the mean of its divisors is an integer number (613728).

Almost surely, 2^4312891 is an apocalyptic number.

4312891 is a deficient number, since it is larger than the sum of its proper divisors (596933).

4312891 is a wasteful number, since it uses less digits than its factorization.

4312891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17081.

The product of its digits is 1728, while the sum is 28.

The square root of 4312891 is about 2076.7501053328. The cubic root of 4312891 is about 162.7756709333.

The spelling of 4312891 in words is "four million, three hundred twelve thousand, eight hundred ninety-one".