531973432242 has 162 divisors, whose sum is σ = 1376588132829. Its totient is φ = 148037722560.

The previous prime is 531973432213. The next prime is 531973432373. The reversal of 531973432242 is 242234379135.

531973432242 is a `hidden beast` number, since 5 + 3 + 197 + 3 + 432 + 24 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 379913209641 + 152060222601 = 616371^2 + 389949^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=515739.

It is a super-2 number, since 2×531973432242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 888102259 + ... + 888102857.

Almost surely, 2^531973432242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531973432242

531973432242 is an abundant number, since it is smaller than the sum of its proper divisors (844614700587).

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

531973432242 is an equidigital number, since it uses as much as digits as its factorization.

531973432242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 652 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 531973432242 in words is "five hundred thirty-one billion, nine hundred seventy-three million, four hundred thirty-two thousand, two hundred forty-two".