1423532321 has 4 divisors (see below), whose sum is σ = 1443582144. Its totient is φ = 1403482500.

The previous prime is 1423532273. The next prime is 1423532323. The reversal of 1423532321 is 1232353241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1232353241 = 7 ⋅176050463.

It is a cyclic number.

It is not a de Polignac number, because 1423532321 - 2²² = 1419338017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1423532323) 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 in 3 ways as a sum of consecutive naturals, for example, 10024805 + ... + 10024946.

It is an arithmetic number, because the mean of its divisors is an integer number (360895536).

Almost surely, 2^1423532321 is an apocalyptic number.

It is an amenable number.

1423532321 is a deficient number, since it is larger than the sum of its proper divisors (20049823).

1423532321 is an equidigital number, since it uses as much as digits as its factorization.

1423532321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20049822.

The product of its digits is 4320, while the sum is 26.

The square root of 1423532321 is about 37729.7272849937. The cubic root of 1423532321 is about 1124.9220873779.

Adding to 1423532321 its reverse (1232353241), we get a palindrome (2655885562).

The spelling of 1423532321 in words is "one billion, four hundred twenty-three million, five hundred thirty-two thousand, three hundred twenty-one".