540404031 has 4 divisors (see below), whose sum is σ = 720538712. Its totient is φ = 360269352.

The previous prime is 540404027. The next prime is 540404057. The reversal of 540404031 is 130404045.

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

It is not a de Polignac number, because 540404031 - 2² = 540404027 is a prime.

It is a super-2 number, since 2×540404031² = 584073033442097922, 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 = 540403989 and 540404007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540404071) 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, 90067336 + ... + 90067341.

It is an arithmetic number, because the mean of its divisors is an integer number (180134678).

Almost surely, 2^540404031 is an apocalyptic number.

540404031 is a deficient number, since it is larger than the sum of its proper divisors (180134681).

540404031 is a wasteful number, since it uses less digits than its factorization.

540404031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180134680.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 540404031 is about 23246.5918147155. The cubic root of 540404031 is about 814.5283285815.

Adding to 540404031 its reverse (130404045), we get a palindrome (670808076).

The spelling of 540404031 in words is "five hundred forty million, four hundred four thousand, thirty-one".