531031345 has 16 divisors (see below), whose sum is σ = 687036672. Its totient is φ = 391700160.

The previous prime is 531031331. The next prime is 531031357. The reversal of 531031345 is 543130135.

It is not a de Polignac number, because 531031345 - 2⁵ = 531031313 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 59740 + ... + 68050.

It is an arithmetic number, because the mean of its divisors is an integer number (42939792).

Almost surely, 2^531031345 is an apocalyptic number.

It is an amenable number.

531031345 is a deficient number, since it is larger than the sum of its proper divisors (156005327).

531031345 is a wasteful number, since it uses less digits than its factorization.

531031345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 531031345 is about 23044.1173621382. The cubic root of 531031345 is about 809.7918201980.

The spelling of 531031345 in words is "five hundred thirty-one million, thirty-one thousand, three hundred forty-five".