531040424 has 64 divisors (see below), whose sum is σ = 1117929600. Its totient is φ = 235008000.

The previous prime is 531040421. The next prime is 531040427. The reversal of 531040424 is 424040135.

It is an interprime number because it is at equal distance from previous prime (531040421) and next prime (531040427).

It is a self number, because there is not a number n which added to its sum of digits gives 531040424.

It is not an unprimeable number, because it can be changed into a prime (531040421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389504 + ... + 390864.

It is an arithmetic number, because the mean of its divisors is an integer number (17467650).

Almost surely, 2^531040424 is an apocalyptic number.

It is an amenable number.

531040424 is an abundant number, since it is smaller than the sum of its proper divisors (586889176).

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

531040424 is a wasteful number, since it uses less digits than its factorization.

531040424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1550 counting only the distinct ones).

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

The square root of 531040424 is about 23044.3143530026. The cubic root of 531040424 is about 809.7964351534.

Adding to 531040424 its reverse (424040135), we get a palindrome (955080559).

The spelling of 531040424 in words is "five hundred thirty-one million, forty thousand, four hundred twenty-four".