540304531 has 8 divisors (see below), whose sum is σ = 582882944. Its totient is φ = 497871360.

The previous prime is 540304529. The next prime is 540304543. The reversal of 540304531 is 135403045.

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

It is a cyclic number.

It is not a de Polignac number, because 540304531 - 2¹ = 540304529 is a prime.

It is a super-2 number, since 2×540304531² = 583857972438259922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540304496 and 540304505.

It is not an unprimeable number, because it can be changed into a prime (540304031) 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 7 ways as a sum of consecutive naturals, for example, 28515 + ... + 43516.

It is an arithmetic number, because the mean of its divisors is an integer number (72860368).

Almost surely, 2^540304531 is an apocalyptic number.

540304531 is a deficient number, since it is larger than the sum of its proper divisors (42578413).

540304531 is a wasteful number, since it uses less digits than its factorization.

540304531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72621.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 540304531 is about 23244.4516175366. The cubic root of 540304531 is about 814.4783347876.

Adding to 540304531 its reverse (135403045), we get a palindrome (675707576).

The spelling of 540304531 in words is "five hundred forty million, three hundred four thousand, five hundred thirty-one".