531240422 has 8 divisors (see below), whose sum is σ = 804597456. Its totient is φ = 263041272.

The previous prime is 531240419. The next prime is 531240427. The reversal of 531240422 is 224042135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531240427) 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, 1289213 + ... + 1289624.

It is an arithmetic number, because the mean of its divisors is an integer number (100574682).

Almost surely, 2^531240422 is an apocalyptic number.

531240422 is a deficient number, since it is larger than the sum of its proper divisors (273357034).

531240422 is a wasteful number, since it uses less digits than its factorization.

531240422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578942.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 531240422 is about 23048.6533663032. The cubic root of 531240422 is about 809.8980829957.

Adding to 531240422 its reverse (224042135), we get a palindrome (755282557).

The spelling of 531240422 in words is "five hundred thirty-one million, two hundred forty thousand, four hundred twenty-two".