540012731 has 2 divisors, whose sum is σ = 540012732. Its totient is φ = 540012730.

The previous prime is 540012709. The next prime is 540012773. The reversal of 540012731 is 137210045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540012731 - 2¹⁸ = 539750587 is a prime.

It is a super-2 number, since 2×540012731² = 583227499284156722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 540012697 and 540012706.

It is not a weakly prime, because it can be changed into another prime (540012131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270006365 + 270006366.

It is an arithmetic number, because the mean of its divisors is an integer number (270006366).

Almost surely, 2^540012731 is an apocalyptic number.

540012731 is a deficient number, since it is larger than the sum of its proper divisors (1).

540012731 is an equidigital number, since it uses as much as digits as its factorization.

540012731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 540012731 is about 23238.1740031354. The cubic root of 540012731 is about 814.3316844190.

Adding to 540012731 its reverse (137210045), we get a palindrome (677222776).

The spelling of 540012731 in words is "five hundred forty million, twelve thousand, seven hundred thirty-one".