1231222283 has 2 divisors, whose sum is σ = 1231222284. Its totient is φ = 1231222282.

The previous prime is 1231222247. The next prime is 1231222339. The reversal of 1231222283 is 3822221321.

It is a weak prime.

It is an emirp because it is prime and its reverse (3822221321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231222283 - 2¹⁶ = 1231156747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231222183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615611141 + 615611142.

It is an arithmetic number, because the mean of its divisors is an integer number (615611142).

Almost surely, 2^1231222283 is an apocalyptic number.

1231222283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231222283 is an equidigital number, since it uses as much as digits as its factorization.

1231222283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 1231222283 is about 35088.7771659259. Note that the first 3 decimals coincide. The cubic root of 1231222283 is about 1071.7960585506.

The spelling of 1231222283 in words is "one billion, two hundred thirty-one million, two hundred twenty-two thousand, two hundred eighty-three".