531440430 has 32 divisors (see below), whose sum is σ = 1282842144. Its totient is φ = 140896896.

The previous prime is 531440363. The next prime is 531440453. The reversal of 531440430 is 34044135.

It is a self number, because there is not a number n which added to its sum of digits gives 531440430.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 46009 + ... + 56388.

It is an arithmetic number, because the mean of its divisors is an integer number (40088817).

Almost surely, 2^531440430 is an apocalyptic number.

531440430 is an abundant number, since it is smaller than the sum of its proper divisors (751401714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531440430 is a wasteful number, since it uses less digits than its factorization.

531440430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102580.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 531440430 is about 23052.9917798103. The cubic root of 531440430 is about 809.9997104099. Note that the first 3 decimals are identical.

Adding to 531440430 its reverse (34044135), we get a palindrome (565484565).

The spelling of 531440430 in words is "five hundred thirty-one million, four hundred forty thousand, four hundred thirty".