541221031 has 4 divisors (see below), whose sum is σ = 582853432. Its totient is φ = 499588632.

The previous prime is 541221029. The next prime is 541221067. The reversal of 541221031 is 130122145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130122145 = 5 ⋅26024429.

It is a cyclic number.

It is not a de Polignac number, because 541221031 - 2¹ = 541221029 is a prime.

It is a super-2 number, since 2×541221031² = 585840408793405922, which 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 (541221011) 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, 20816181 + ... + 20816206.

It is an arithmetic number, because the mean of its divisors is an integer number (145713358).

Almost surely, 2^541221031 is an apocalyptic number.

541221031 is a deficient number, since it is larger than the sum of its proper divisors (41632401).

541221031 is a wasteful number, since it uses less digits than its factorization.

541221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41632400.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 541221031 is about 23264.1576464741. The cubic root of 541221031 is about 814.9385985082.

Adding to 541221031 its reverse (130122145), we get a palindrome (671343176).

The spelling of 541221031 in words is "five hundred forty-one million, two hundred twenty-one thousand, thirty-one".