531243353242 has 16 divisors (see below), whose sum is σ = 935316483840. Its totient is φ = 221522324688.

The previous prime is 531243353227. The next prime is 531243353261. The reversal of 531243353242 is 242353342135.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 512782642 + ... + 512783677.

It is an arithmetic number, because the mean of its divisors is an integer number (58457280240).

Almost surely, 2^531243353242 is an apocalyptic number.

531243353242 is a deficient number, since it is larger than the sum of its proper divisors (404073130598).

531243353242 is a wasteful number, since it uses less digits than its factorization.

531243353242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025566365.

The product of its digits is 259200, while the sum is 37.

Adding to 531243353242 its reverse (242353342135), we get a palindrome (773596695377).

The spelling of 531243353242 in words is "five hundred thirty-one billion, two hundred forty-three million, three hundred fifty-three thousand, two hundred forty-two".