531352123140 has 24 divisors (see below), whose sum is σ = 1487785944960. Its totient is φ = 141693899488.

The previous prime is 531352123073. The next prime is 531352123153. The reversal of 531352123140 is 41321253135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 531352123098 and 531352123107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4427934300 + ... + 4427934419.

It is an arithmetic number, because the mean of its divisors is an integer number (61991081040).

Almost surely, 2^531352123140 is an apocalyptic number.

It is an amenable number.

531352123140 is an abundant number, since it is smaller than the sum of its proper divisors (956433821820).

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

531352123140 is a wasteful number, since it uses less digits than its factorization.

531352123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855868731 (or 8855868729 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 531352123140 its reverse (41321253135), we get a palindrome (572673376275).

The spelling of 531352123140 in words is "five hundred thirty-one billion, three hundred fifty-two million, one hundred twenty-three thousand, one hundred forty".