1223223437 has 2 divisors, whose sum is σ = 1223223438. Its totient is φ = 1223223436.

The previous prime is 1223223427. The next prime is 1223223481. The reversal of 1223223437 is 7343223221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827770441 + 395452996 = 28771^2 + 19886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223223437 - 2¹⁸ = 1222961293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223223427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611611718 + 611611719.

It is an arithmetic number, because the mean of its divisors is an integer number (611611719).

Almost surely, 2^1223223437 is an apocalyptic number.

It is an amenable number.

1223223437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223223437 is an equidigital number, since it uses as much as digits as its factorization.

1223223437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 29.

The square root of 1223223437 is about 34974.6113202134. The cubic root of 1223223437 is about 1069.4699785678.

Adding to 1223223437 its reverse (7343223221), we get a palindrome (8566446658).

The spelling of 1223223437 in words is "one billion, two hundred twenty-three million, two hundred twenty-three thousand, four hundred thirty-seven".