531432051511 has 2 divisors, whose sum is σ = 531432051512. Its totient is φ = 531432051510.

The previous prime is 531432051499. The next prime is 531432051529. The reversal of 531432051511 is 115150234135.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531432051511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531432051811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265716025755 + 265716025756.

It is an arithmetic number, because the mean of its divisors is an integer number (265716025756).

Almost surely, 2^531432051511 is an apocalyptic number.

531432051511 is a deficient number, since it is larger than the sum of its proper divisors (1).

531432051511 is an equidigital number, since it uses as much as digits as its factorization.

531432051511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 531432051511 its reverse (115150234135), we get a palindrome (646582285646).

The spelling of 531432051511 in words is "five hundred thirty-one billion, four hundred thirty-two million, fifty-one thousand, five hundred eleven".