540615331 has 2 divisors, whose sum is σ = 540615332. Its totient is φ = 540615330.

The previous prime is 540615319. The next prime is 540615347. The reversal of 540615331 is 133516045.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540615331 is a prime.

It is a super-2 number, since 2×540615331² = 584529872224479122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 540615331.

It is not a weakly prime, because it can be changed into another prime (540615301) 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 as a sum of consecutive naturals, namely, 270307665 + 270307666.

It is an arithmetic number, because the mean of its divisors is an integer number (270307666).

Almost surely, 2^540615331 is an apocalyptic number.

540615331 is a deficient number, since it is larger than the sum of its proper divisors (1).

540615331 is an equidigital number, since it uses as much as digits as its factorization.

540615331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 540615331 is about 23251.1361227790. The cubic root of 540615331 is about 814.6344759570.

The spelling of 540615331 in words is "five hundred forty million, six hundred fifteen thousand, three hundred thirty-one".