531224101 has 4 divisors (see below), whose sum is σ = 534607852. Its totient is φ = 527840352.

The previous prime is 531224081. The next prime is 531224131. The reversal of 531224101 is 101422135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84916225 + 446307876 = 9215^2 + 21126^2 .

It is a cyclic number.

It is not a de Polignac number, because 531224101 - 2⁵ = 531224069 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 (531224131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691640 + ... + 1691953.

It is an arithmetic number, because the mean of its divisors is an integer number (133651963).

Almost surely, 2^531224101 is an apocalyptic number.

It is an amenable number.

531224101 is a deficient number, since it is larger than the sum of its proper divisors (3383751).

531224101 is a wasteful number, since it uses less digits than its factorization.

531224101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383750.

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

The square root of 531224101 is about 23048.2993081919. The cubic root of 531224101 is about 809.8897888967.

Adding to 531224101 its reverse (101422135), we get a palindrome (632646236).

The spelling of 531224101 in words is "five hundred thirty-one million, two hundred twenty-four thousand, one hundred one".