531311045 has 8 divisors (see below), whose sum is σ = 638637720. Its totient is φ = 424339200.

The previous prime is 531311029. The next prime is 531311069. The reversal of 531311045 is 540113135.

It can be written as a sum of positive squares in 4 ways, for example, as 175536001 + 355775044 = 13249^2 + 18862^2 .

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

It is not a de Polignac number, because 531311045 - 2⁴ = 531311029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531311045.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 85400 + ... + 91409.

It is an arithmetic number, because the mean of its divisors is an integer number (79829715).

Almost surely, 2^531311045 is an apocalyptic number.

It is an amenable number.

531311045 is a deficient number, since it is larger than the sum of its proper divisors (107326675).

531311045 is a wasteful number, since it uses less digits than its factorization.

531311045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177415.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 531311045 is about 23050.1853571723. The cubic root of 531311045 is about 809.9339706375.

The spelling of 531311045 in words is "five hundred thirty-one million, three hundred eleven thousand, forty-five".