1223113249 has 2 divisors, whose sum is σ = 1223113250. Its totient is φ = 1223113248.

The previous prime is 1223113223. The next prime is 1223113259. The reversal of 1223113249 is 9423113221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136027025 + 87086224 = 33705^2 + 9332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223113249 - 2⁵ = 1223113217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223113219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611556624 + 611556625.

It is an arithmetic number, because the mean of its divisors is an integer number (611556625).

Almost surely, 2^1223113249 is an apocalyptic number.

It is an amenable number.

1223113249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223113249 is an equidigital number, since it uses as much as digits as its factorization.

1223113249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 1223113249 is about 34973.0360277743. The cubic root of 1223113249 is about 1069.4378649754.

Subtracting from 1223113249 its sum of digits (28), we obtain a palindrome (1223113221).

The spelling of 1223113249 in words is "one billion, two hundred twenty-three million, one hundred thirteen thousand, two hundred forty-nine".