531911 has 2 divisors, whose sum is σ = 531912. Its totient is φ = 531910.

The previous prime is 531901. The next prime is 531919. The reversal of 531911 is 119135.

531911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531911 - 2⁶ = 531847 is a prime.

It is a Sophie Germain prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265955 + 265956.

It is an arithmetic number, because the mean of its divisors is an integer number (265956).

2⁵³¹⁹¹¹ is an apocalyptic number.

531911 is a deficient number, since it is larger than the sum of its proper divisors (1).

531911 is an equidigital number, since it uses as much as digits as its factorization.

531911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 20.

The square root of 531911 is about 729.3222881552. The cubic root of 531911 is about 81.0238714380.

The spelling of 531911 in words is "five hundred thirty-one thousand, nine hundred eleven".