531030945 has 32 divisors (see below), whose sum is σ = 865612800. Its totient is φ = 277928640.

The previous prime is 531030931. The next prime is 531030959. The reversal of 531030945 is 549030135.

It is an interprime number because it is at equal distance from previous prime (531030931) and next prime (531030959).

It is not a de Polignac number, because 531030945 - 2¹⁵ = 530998177 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311706 + ... + 313404.

It is an arithmetic number, because the mean of its divisors is an integer number (27050400).

Almost surely, 2^531030945 is an apocalyptic number.

It is an amenable number.

531030945 is a deficient number, since it is larger than the sum of its proper divisors (334581855).

531030945 is a wasteful number, since it uses less digits than its factorization.

531030945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 531030945 is about 23044.1086831320. The cubic root of 531030945 is about 809.7916168724.

The spelling of 531030945 in words is "five hundred thirty-one million, thirty thousand, nine hundred forty-five".