1263126323 has 2 divisors, whose sum is σ = 1263126324. Its totient is φ = 1263126322.

The previous prime is 1263126311. The next prime is 1263126413. The reversal of 1263126323 is 3236213621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263126323 - 2⁴ = 1263126307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263126923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631563161 + 631563162.

It is an arithmetic number, because the mean of its divisors is an integer number (631563162).

Almost surely, 2^1263126323 is an apocalyptic number.

1263126323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263126323 is an equidigital number, since it uses as much as digits as its factorization.

1263126323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 1263126323 is about 35540.4885025516. The cubic root of 1263126323 is about 1080.9748636574.

Adding to 1263126323 its reverse (3236213621), we get a palindrome (4499339944).

The spelling of 1263126323 in words is "one billion, two hundred sixty-three million, one hundred twenty-six thousand, three hundred twenty-three".