531430133311 has 16 divisors (see below), whose sum is σ = 676659317760. Its totient is φ = 405290731680.

The previous prime is 531430133293. The next prime is 531430133347. The reversal of 531430133311 is 113331034135.

It is a cyclic number.

It is not a de Polignac number, because 531430133311 - 2⁵ = 531430133279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531430133311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531430133371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73418616 + ... + 73425853.

It is an arithmetic number, because the mean of its divisors is an integer number (42291207360).

Almost surely, 2^531430133311 is an apocalyptic number.

531430133311 is a deficient number, since it is larger than the sum of its proper divisors (145229184449).

531430133311 is a wasteful number, since it uses less digits than its factorization.

531430133311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146844534.

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 531430133311 its reverse (113331034135), we get a palindrome (644761167446).

The spelling of 531430133311 in words is "five hundred thirty-one billion, four hundred thirty million, one hundred thirty-three thousand, three hundred eleven".