531440313404 has 48 divisors (see below), whose sum is σ = 1248698927616. Its totient is φ = 191127384000.

The previous prime is 531440313403. The next prime is 531440313413. The reversal of 531440313404 is 404313044135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531440313403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66359672 + ... + 66367679.

It is an arithmetic number, because the mean of its divisors is an integer number (26014560992).

Almost surely, 2^531440313404 is an apocalyptic number.

It is an amenable number.

531440313404 is an abundant number, since it is smaller than the sum of its proper divisors (717258614212).

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

531440313404 is a wasteful number, since it uses less digits than its factorization.

531440313404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132727386 (or 132727384 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 531440313404 its reverse (404313044135), we get a palindrome (935753357539).

The spelling of 531440313404 in words is "five hundred thirty-one billion, four hundred forty million, three hundred thirteen thousand, four hundred four".