531628211 has 2 divisors, whose sum is σ = 531628212. Its totient is φ = 531628210.

The previous prime is 531628177. The next prime is 531628241. The reversal of 531628211 is 112826135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531628211 - 2⁶ = 531628147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531628241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265814105 + 265814106.

It is an arithmetic number, because the mean of its divisors is an integer number (265814106).

Almost surely, 2^531628211 is an apocalyptic number.

531628211 is a deficient number, since it is larger than the sum of its proper divisors (1).

531628211 is an equidigital number, since it uses as much as digits as its factorization.

531628211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 531628211 is about 23057.0642320309. The cubic root of 531628211 is about 810.0951018754.

The spelling of 531628211 in words is "five hundred thirty-one million, six hundred twenty-eight thousand, two hundred eleven".