531140241 has 4 divisors (see below), whose sum is σ = 708186992. Its totient is φ = 354093492.

The previous prime is 531140221. The next prime is 531140251. The reversal of 531140241 is 142041135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 531140241 - 2⁵ = 531140209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531140221) 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, 88523371 + ... + 88523376.

It is an arithmetic number, because the mean of its divisors is an integer number (177046748).

Almost surely, 2^531140241 is an apocalyptic number.

It is an amenable number.

531140241 is a deficient number, since it is larger than the sum of its proper divisors (177046751).

531140241 is a wasteful number, since it uses less digits than its factorization.

531140241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177046750.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 531140241 is about 23046.4800132254. The cubic root of 531140241 is about 809.8471697637.

Adding to 531140241 its reverse (142041135), we get a palindrome (673181376).

The spelling of 531140241 in words is "five hundred thirty-one million, one hundred forty thousand, two hundred forty-one".