531031245011 has 4 divisors (see below), whose sum is σ = 531315677112. Its totient is φ = 530746812912.

The previous prime is 531031244957. The next prime is 531031245029. The reversal of 531031245011 is 110542130135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110542130135 = 5 ⋅22108426027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531031245011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531031245061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 142213250 + ... + 142216983.

It is an arithmetic number, because the mean of its divisors is an integer number (132828919278).

Almost surely, 2^531031245011 is an apocalyptic number.

531031245011 is a deficient number, since it is larger than the sum of its proper divisors (284432101).

531031245011 is a wasteful number, since it uses less digits than its factorization.

531031245011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284432100.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 531031245011 its reverse (110542130135), we get a palindrome (641573375146).

The spelling of 531031245011 in words is "five hundred thirty-one billion, thirty-one million, two hundred forty-five thousand, eleven".