1423303221 has 8 divisors (see below), whose sum is σ = 1900805920. Its totient is φ = 947334672.

The previous prime is 1423303169. The next prime is 1423303229. The reversal of 1423303221 is 1223033241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1423303221 - 2¹⁹ = 1422778933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423303229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381370 + ... + 385083.

It is an arithmetic number, because the mean of its divisors is an integer number (237600740).

Almost surely, 2^1423303221 is an apocalyptic number.

It is an amenable number.

1423303221 is a deficient number, since it is larger than the sum of its proper divisors (477502699).

1423303221 is an equidigital number, since it uses as much as digits as its factorization.

1423303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767075.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1423303221 is about 37726.6910952975. The cubic root of 1423303221 is about 1124.8617366870.

Adding to 1423303221 its reverse (1223033241), we get a palindrome (2646336462).

The spelling of 1423303221 in words is "one billion, four hundred twenty-three million, three hundred three thousand, two hundred twenty-one".