531505230043042 has 8 divisors (see below), whose sum is σ = 797283299577132. Its totient is φ = 265744130184000.

The previous prime is 531505230043019. The next prime is 531505230043043. The reversal of 531505230043042 is 240340032505135.

It can be written as a sum of positive squares in 2 ways, for example, as 528459224274081 + 3046005768961 = 22988241^2 + 1745281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×531505230043042² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531505230042992 and 531505230043010.

It is not an unprimeable number, because it can be changed into a prime (531505230043043) 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, 4242340459 + ... + 4242465742.

Almost surely, 2^{531505230043042} is an apocalyptic number.

531505230043042 is a deficient number, since it is larger than the sum of its proper divisors (265778069534090).

531505230043042 is a wasteful number, since it uses less digits than its factorization.

531505230043042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484837524.

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

Adding to 531505230043042 its reverse (240340032505135), we get a palindrome (771845262548177).

The spelling of 531505230043042 in words is "five hundred thirty-one trillion, five hundred five billion, two hundred thirty million, forty-three thousand, forty-two".