831222407 has 2 divisors, whose sum is σ = 831222408. Its totient is φ = 831222406.

The previous prime is 831222367. The next prime is 831222433. The reversal of 831222407 is 704222138.

831222407 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 831222407 - 2¹⁴ = 831206023 is a prime.

It is a super-3 number, since 3×831222407³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 831222407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831222487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415611203 + 415611204.

It is an arithmetic number, because the mean of its divisors is an integer number (415611204).

Almost surely, 2^831222407 is an apocalyptic number.

831222407 is a deficient number, since it is larger than the sum of its proper divisors (1).

831222407 is an equidigital number, since it uses as much as digits as its factorization.

831222407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 831222407 is about 28830.9279593980. The cubic root of 831222407 is about 940.2407739191.

The spelling of 831222407 in words is "eight hundred thirty-one million, two hundred twenty-two thousand, four hundred seven".