531323412240 has 40 divisors (see below), whose sum is σ = 1647102578688. Its totient is φ = 141686243200.

The previous prime is 531323412181. The next prime is 531323412259. The reversal of 531323412240 is 42214323135.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 531323412198 and 531323412207.

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, 1106923536 + ... + 1106924015.

Almost surely, 2^531323412240 is an apocalyptic number.

It is an amenable number.

531323412240 is an abundant number, since it is smaller than the sum of its proper divisors (1115779166448).

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

531323412240 is a wasteful number, since it uses less digits than its factorization.

531323412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213847567 (or 2213847561 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 531323412240 its reverse (42214323135), we get a palindrome (573537735375).

The spelling of 531323412240 in words is "five hundred thirty-one billion, three hundred twenty-three million, four hundred twelve thousand, two hundred forty".