540403453231 has 4 divisors (see below), whose sum is σ = 540440127864. Its totient is φ = 540366778600.

The previous prime is 540403453201. The next prime is 540403453243. The reversal of 540403453231 is 132354304045.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132354304045 = 5 ⋅26470860809.

It is a cyclic number.

It is not a de Polignac number, because 540403453231 - 2⁷ = 540403453103 is a prime.

It is a super-2 number, since 2×540403453231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540403453201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18315205 + ... + 18344686.

It is an arithmetic number, because the mean of its divisors is an integer number (135110031966).

Almost surely, 2^540403453231 is an apocalyptic number.

540403453231 is a deficient number, since it is larger than the sum of its proper divisors (36674633).

540403453231 is a wasteful number, since it uses less digits than its factorization.

540403453231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36674632.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 540403453231 its reverse (132354304045), we get a palindrome (672757757276).

The spelling of 540403453231 in words is "five hundred forty billion, four hundred three million, four hundred fifty-three thousand, two hundred thirty-one".