531421344 has 96 divisors (see below), whose sum is σ = 1600058880. Its totient is φ = 171417600.

The previous prime is 531421337. The next prime is 531421351. The reversal of 531421344 is 443124135.

It is a happy number.

531421344 is a `hidden beast` number, since 5 + 314 + 2 + 1 + 344 = 666.

It is an interprime number because it is at equal distance from previous prime (531421337) and next prime (531421351).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16864 + ... + 36704.

It is an arithmetic number, because the mean of its divisors is an integer number (16667280).

Almost surely, 2^531421344 is an apocalyptic number.

531421344 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800029440).

531421344 is an abundant number, since it is smaller than the sum of its proper divisors (1068637536).

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

531421344 is a wasteful number, since it uses less digits than its factorization.

531421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19891 (or 19877 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 531421344 is about 23052.5778168083. The cubic root of 531421344 is about 809.9900135943.

Adding to 531421344 its reverse (443124135), we get a palindrome (974545479).

It can be divided in two parts, 531 and 421344, that added together give a cube (421875 = 75³).

The spelling of 531421344 in words is "five hundred thirty-one million, four hundred twenty-one thousand, three hundred forty-four".