531543025340 has 24 divisors (see below), whose sum is σ = 1117110430800. Its totient is φ = 212451481088.

The previous prime is 531543025313. The next prime is 531543025361. The reversal of 531543025340 is 43520345135.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 531543025340.

It is a congruent number.

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, 10331765 + ... + 10383084.

It is an arithmetic number, because the mean of its divisors is an integer number (46546267950).

Almost surely, 2^531543025340 is an apocalyptic number.

It is an amenable number.

531543025340 is an abundant number, since it is smaller than the sum of its proper divisors (585567405460).

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

531543025340 is a wasteful number, since it uses less digits than its factorization.

531543025340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20716141 (or 20716139 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 531543025340 in words is "five hundred thirty-one billion, five hundred forty-three million, twenty-five thousand, three hundred forty".