531041201240 has 512 divisors, whose sum is σ = 1501240780800. Its totient is φ = 166564823040.

The previous prime is 531041201237. The next prime is 531041201281. The reversal of 531041201240 is 42102140135.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 813232754 + ... + 813233406.

It is an arithmetic number, because the mean of its divisors is an integer number (2932110900).

Almost surely, 2^531041201240 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 531041201240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750620390400).

531041201240 is an abundant number, since it is smaller than the sum of its proper divisors (970199579560).

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

531041201240 is a wasteful number, since it uses less digits than its factorization.

531041201240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 531041201240 its reverse (42102140135), we get a palindrome (573143341375).

The spelling of 531041201240 in words is "five hundred thirty-one billion, forty-one million, two hundred one thousand, two hundred forty".