531555340112 has 80 divisors (see below), whose sum is σ = 1139864901120. Its totient is φ = 239003107200.

The previous prime is 531555340087. The next prime is 531555340133. The reversal of 531555340112 is 211043555135.

It is a congruent number.

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, 625787 + ... + 1206117.

It is an arithmetic number, because the mean of its divisors is an integer number (14248311264).

Almost surely, 2^531555340112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531555340112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569932450560).

531555340112 is an abundant number, since it is smaller than the sum of its proper divisors (608309561008).

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

531555340112 is a wasteful number, since it uses less digits than its factorization.

531555340112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580512 (or 580506 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 531555340112 its reverse (211043555135), we get a palindrome (742598895247).

The spelling of 531555340112 in words is "five hundred thirty-one billion, five hundred fifty-five million, three hundred forty thousand, one hundred twelve".