541221311 has 4 divisors (see below), whose sum is σ = 555848952. Its totient is φ = 526593672.

The previous prime is 541221283. The next prime is 541221353. The reversal of 541221311 is 113122145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113122145 = 5 ⋅22624429.

It is a cyclic number.

It is not a de Polignac number, because 541221311 - 2¹⁰ = 541220287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313765 + ... + 7313838.

It is an arithmetic number, because the mean of its divisors is an integer number (138962238).

Almost surely, 2^541221311 is an apocalyptic number.

541221311 is a deficient number, since it is larger than the sum of its proper divisors (14627641).

541221311 is a wasteful number, since it uses less digits than its factorization.

541221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14627640.

The product of its digits is 240, while the sum is 20.

The square root of 541221311 is about 23264.1636643143. The cubic root of 541221311 is about 814.9387390439.

Adding to 541221311 its reverse (113122145), we get a palindrome (654343456).

The spelling of 541221311 in words is "five hundred forty-one million, two hundred twenty-one thousand, three hundred eleven".