1222831 has 2 divisors, whose sum is σ = 1222832. Its totient is φ = 1222830.

The previous prime is 1222829. The next prime is 1222847. The reversal of 1222831 is 1382221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1382221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222831 - 2¹ = 1222829 is a prime.

It is a super-2 number, since 2×1222831² = 2990631309122, which contains 22 as substring.

Together with 1222829, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1222799 and 1222808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611415 + 611416.

It is an arithmetic number, because the mean of its divisors is an integer number (611416).

2^1222831 is an apocalyptic number.

1222831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222831 is an equidigital number, since it uses as much as digits as its factorization.

1222831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 1222831 is about 1105.8168926183. The cubic root of 1222831 is about 106.9355596499.

The spelling of 1222831 in words is "one million, two hundred twenty-two thousand, eight hundred thirty-one".