1031222249 has 2 divisors, whose sum is σ = 1031222250. Its totient is φ = 1031222248.

The previous prime is 1031222233. The next prime is 1031222251. The reversal of 1031222249 is 9422221301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950797225 + 80425024 = 30835^2 + 8968^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031222249 - 2⁴ = 1031222233 is a prime.

Together with 1031222251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031222299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515611124 + 515611125.

It is an arithmetic number, because the mean of its divisors is an integer number (515611125).

Almost surely, 2^1031222249 is an apocalyptic number.

It is an amenable number.

1031222249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031222249 is an equidigital number, since it uses as much as digits as its factorization.

1031222249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1031222249 is about 32112.6493612720. The cubic root of 1031222249 is about 1010.3009425731.

The spelling of 1031222249 in words is "one billion, thirty-one million, two hundred twenty-two thousand, two hundred forty-nine".