4320931 has 4 divisors (see below), whose sum is σ = 4402512. Its totient is φ = 4239352.

The previous prime is 4320929. The next prime is 4320959. The reversal of 4320931 is 1390234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1390234 = 2 ⋅695117.

It is a cyclic number.

It is not a de Polignac number, because 4320931 - 2¹ = 4320929 is a prime.

It is a super-4 number, since 4×4320931⁴ (a number of 28 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4321931) 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, 40711 + ... + 40816.

It is an arithmetic number, because the mean of its divisors is an integer number (1100628).

Almost surely, 2^4320931 is an apocalyptic number.

4320931 is a deficient number, since it is larger than the sum of its proper divisors (81581).

4320931 is an equidigital number, since it uses as much as digits as its factorization.

4320931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81580.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 4320931 is about 2078.6849208093. The cubic root of 4320931 is about 162.8767557979.

The spelling of 4320931 in words is "four million, three hundred twenty thousand, nine hundred thirty-one".