1223031307 has 4 divisors (see below), whose sum is σ = 1223110080. Its totient is φ = 1222952536.

The previous prime is 1223031259. The next prime is 1223031343. The reversal of 1223031307 is 7031303221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1223031307 - 2¹⁹ = 1222507019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223031377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7483 + ... + 50020.

It is an arithmetic number, because the mean of its divisors is an integer number (305777520).

Almost surely, 2^1223031307 is an apocalyptic number.

1223031307 is a deficient number, since it is larger than the sum of its proper divisors (78773).

1223031307 is an equidigital number, since it uses as much as digits as its factorization.

1223031307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78772.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 1223031307 is about 34971.8645056279. The cubic root of 1223031307 is about 1069.4139822498.

Adding to 1223031307 its reverse (7031303221), we get a palindrome (8254334528).

The spelling of 1223031307 in words is "one billion, two hundred twenty-three million, thirty-one thousand, three hundred seven".