1423323281 has 2 divisors, whose sum is σ = 1423323282. Its totient is φ = 1423323280.

The previous prime is 1423323233. The next prime is 1423323287. The reversal of 1423323281 is 1823233241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1413083281 + 10240000 = 37591^2 + 3200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423323281 - 2⁶ = 1423323217 is a prime.

It is a super-2 number, since 2×1423323281² = 4051698324473209922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1423323287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711661640 + 711661641.

It is an arithmetic number, because the mean of its divisors is an integer number (711661641).

Almost surely, 2^1423323281 is an apocalyptic number.

It is an amenable number.

1423323281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423323281 is an equidigital number, since it uses as much as digits as its factorization.

1423323281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 1423323281 is about 37726.9569538811. The cubic root of 1423323281 is about 1124.8670212533.

The spelling of 1423323281 in words is "one billion, four hundred twenty-three million, three hundred twenty-three thousand, two hundred eighty-one".