531034140240440 has 256 divisors, whose sum is σ = 1231350340147200. Its totient is φ = 206011887333376.

The previous prime is 531034140240427. The next prime is 531034140240449. The reversal of 531034140240440 is 44042041430135.

It is a happy number.

It is a super-2 number, since 2×531034140240440² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531034140240440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531034140240449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191225832332 + ... + 191225835108.

It is an arithmetic number, because the mean of its divisors is an integer number (4809962266200).

Almost surely, 2^{531034140240440} 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 531034140240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615675170073600).

531034140240440 is an abundant number, since it is smaller than the sum of its proper divisors (700316199906760).

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

531034140240440 is a wasteful number, since it uses less digits than its factorization.

531034140240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 531034140240440 its reverse (44042041430135), we get a palindrome (575076181670575).

The spelling of 531034140240440 in words is "five hundred thirty-one trillion, thirty-four billion, one hundred forty million, two hundred forty thousand, four hundred forty".