540204131 has 2 divisors, whose sum is σ = 540204132. Its totient is φ = 540204130.

The previous prime is 540204127. The next prime is 540204167. The reversal of 540204131 is 131402045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540204131 - 2² = 540204127 is a prime.

It is a super-2 number, since 2×540204131² = 583641006298930322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540204191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270102065 + 270102066.

It is an arithmetic number, because the mean of its divisors is an integer number (270102066).

Almost surely, 2^540204131 is an apocalyptic number.

540204131 is a deficient number, since it is larger than the sum of its proper divisors (1).

540204131 is an equidigital number, since it uses as much as digits as its factorization.

540204131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 540204131 is about 23242.2918620346. The cubic root of 540204131 is about 814.4278825668.

Adding to 540204131 its reverse (131402045), we get a palindrome (671606176).

The spelling of 540204131 in words is "five hundred forty million, two hundred four thousand, one hundred thirty-one".