540329231 has 4 divisors (see below), whose sum is σ = 581893032. Its totient is φ = 498765432.

The previous prime is 540329183. The next prime is 540329243. The reversal of 540329231 is 132923045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540329231 - 2¹⁰ = 540328207 is a prime.

It is a super-2 number, since 2×540329231² = 583911355746102722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540329194 and 540329203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540329261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20781881 + ... + 20781906.

It is an arithmetic number, because the mean of its divisors is an integer number (145473258).

Almost surely, 2^540329231 is an apocalyptic number.

540329231 is a deficient number, since it is larger than the sum of its proper divisors (41563801).

540329231 is a wasteful number, since it uses less digits than its factorization.

540329231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41563800.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 540329231 is about 23244.9829210520. The cubic root of 540329231 is about 814.4907458800.

The spelling of 540329231 in words is "five hundred forty million, three hundred twenty-nine thousand, two hundred thirty-one".