531363240 has 96 divisors (see below), whose sum is σ = 1790923680. Its totient is φ = 141694272.

The previous prime is 531363221. The next prime is 531363241. The reversal of 531363240 is 42363135.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (531363241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17614 + ... + 37053.

It is an arithmetic number, because the mean of its divisors is an integer number (18655455).

Almost surely, 2^531363240 is an apocalyptic number.

It is an amenable number.

531363240 is an abundant number, since it is smaller than the sum of its proper divisors (1259560440).

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

531363240 is a wasteful number, since it uses less digits than its factorization.

531363240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54693 (or 54677 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 531363240 is about 23051.3175328440. The cubic root of 531363240 is about 809.9604919002.

The spelling of 531363240 in words is "five hundred thirty-one million, three hundred sixty-three thousand, two hundred forty".