531011424 has 48 divisors (see below), whose sum is σ = 1410720192. Its totient is φ = 174868608.

The previous prime is 531011407. The next prime is 531011443. The reversal of 531011424 is 424110135.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 531011424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25354 + ... + 41289.

It is an arithmetic number, because the mean of its divisors is an integer number (29390004).

Almost surely, 2^531011424 is an apocalyptic number.

It is an amenable number.

531011424 is an abundant number, since it is smaller than the sum of its proper divisors (879708768).

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

531011424 is a wasteful number, since it uses less digits than its factorization.

531011424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66739 (or 66731 counting only the distinct ones).

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

The square root of 531011424 is about 23043.6851219591. The cubic root of 531011424 is about 809.7816939504.

Adding to 531011424 its reverse (424110135), we get a palindrome (955121559).

The spelling of 531011424 in words is "five hundred thirty-one million, eleven thousand, four hundred twenty-four".