4320531 has 6 divisors (see below), whose sum is σ = 6240780. Its totient is φ = 2880348.

The previous prime is 4320529. The next prime is 4320559. The reversal of 4320531 is 1350234.

It is not a de Polignac number, because 4320531 - 2¹ = 4320529 is a prime.

It is a super-2 number, since 2×4320531² = 37333976243922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4320521) 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 5 ways as a sum of consecutive naturals, for example, 240021 + ... + 240038.

It is an arithmetic number, because the mean of its divisors is an integer number (1040130).

Almost surely, 2^4320531 is an apocalyptic number.

4320531 is a deficient number, since it is larger than the sum of its proper divisors (1920249).

4320531 is a wasteful number, since it uses less digits than its factorization.

4320531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480065 (or 480062 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 4320531 is about 2078.5887039046. The cubic root of 4320531 is about 162.8717296656.

Adding to 4320531 its reverse (1350234), we get a palindrome (5670765).

It can be divided in two parts, 4320 and 531, that added together give a triangular number (4851 = T₉₈).

The spelling of 4320531 in words is "four million, three hundred twenty thousand, five hundred thirty-one".