540230681 has 2 divisors, whose sum is σ = 540230682. Its totient is φ = 540230680.

The previous prime is 540230659. The next prime is 540230689. The reversal of 540230681 is 186032045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523494400 + 16736281 = 22880^2 + 4091^2 .

It is a cyclic number.

It is not a de Polignac number, because 540230681 - 2⁶ = 540230617 is a prime.

It is a super-2 number, since 2×540230681² = 583698377387447522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (540230689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270115340 + 270115341.

It is an arithmetic number, because the mean of its divisors is an integer number (270115341).

Almost surely, 2^540230681 is an apocalyptic number.

It is an amenable number.

540230681 is a deficient number, since it is larger than the sum of its proper divisors (1).

540230681 is an equidigital number, since it uses as much as digits as its factorization.

540230681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 540230681 is about 23242.8630121162. The cubic root of 540230681 is about 814.4412248726.

The spelling of 540230681 in words is "five hundred forty million, two hundred thirty thousand, six hundred eighty-one".