1223331139 has 2 divisors, whose sum is σ = 1223331140. Its totient is φ = 1223331138.

The previous prime is 1223331133. The next prime is 1223331167. The reversal of 1223331139 is 9311333221.

It is an a-pointer prime, because the next prime (1223331167) can be obtained adding 1223331139 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223331139 - 2⁹ = 1223330627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223331133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611665569 + 611665570.

It is an arithmetic number, because the mean of its divisors is an integer number (611665570).

Almost surely, 2^1223331139 is an apocalyptic number.

1223331139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223331139 is an equidigital number, since it uses as much as digits as its factorization.

1223331139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

The square root of 1223331139 is about 34976.1510032193. The cubic root of 1223331139 is about 1069.5013657676.

The spelling of 1223331139 in words is "one billion, two hundred twenty-three million, three hundred thirty-one thousand, one hundred thirty-nine".