831409211 has 2 divisors, whose sum is σ = 831409212. Its totient is φ = 831409210.

The previous prime is 831409169. The next prime is 831409217. The reversal of 831409211 is 112904138.

831409211 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 831409211 - 2¹⁴ = 831392827 is a prime.

It is a super-2 number, since 2×831409211² = 1382482552271285042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (831409217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415704605 + 415704606.

It is an arithmetic number, because the mean of its divisors is an integer number (415704606).

Almost surely, 2^831409211 is an apocalyptic number.

831409211 is a deficient number, since it is larger than the sum of its proper divisors (1).

831409211 is an equidigital number, since it uses as much as digits as its factorization.

831409211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 831409211 is about 28834.1674233885. The cubic root of 831409211 is about 940.3112033574.

The spelling of 831409211 in words is "eight hundred thirty-one million, four hundred nine thousand, two hundred eleven".