531512121043 has 8 divisors (see below), whose sum is σ = 543981797568. Its totient is φ = 519047395944.

The previous prime is 531512121013. The next prime is 531512121053. The reversal of 531512121043 is 340121215135.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531512121043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531512121013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020205 + ... + 1450462.

It is an arithmetic number, because the mean of its divisors is an integer number (67997724696).

Almost surely, 2^531512121043 is an apocalyptic number.

531512121043 is a deficient number, since it is larger than the sum of its proper divisors (12469676525).

531512121043 is a wasteful number, since it uses less digits than its factorization.

531512121043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475713.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 531512121043 its reverse (340121215135), we get a palindrome (871633336178).

The spelling of 531512121043 in words is "five hundred thirty-one billion, five hundred twelve million, one hundred twenty-one thousand, forty-three".