531325234540 has 12 divisors (see below), whose sum is σ = 1115782992576. Its totient is φ = 212530093808.

The previous prime is 531325234511. The next prime is 531325234549. The reversal of 531325234540 is 45432523135.

It is a self number, because there is not a number n which added to its sum of digits gives 531325234540.

It is not an unprimeable number, because it can be changed into a prime (531325234549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13283130844 + ... + 13283130883.

It is an arithmetic number, because the mean of its divisors is an integer number (92981916048).

Almost surely, 2^531325234540 is an apocalyptic number.

It is an amenable number.

531325234540 is an abundant number, since it is smaller than the sum of its proper divisors (584457758036).

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

531325234540 is a wasteful number, since it uses less digits than its factorization.

531325234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26566261736 (or 26566261734 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 531325234540 its reverse (45432523135), we get a palindrome (576757757675).

The spelling of 531325234540 in words is "five hundred thirty-one billion, three hundred twenty-five million, two hundred thirty-four thousand, five hundred forty".