1423231321 has 8 divisors (see below), whose sum is σ = 1447173000. Its totient is φ = 1399309440.

The previous prime is 1423231301. The next prime is 1423231357. The reversal of 1423231321 is 1231323241.

It can be written as a sum of positive squares in 4 ways, for example, as 55696 + 1423175625 = 236^2 + 37725^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423231321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1423231292 and 1423231301.

It is not an unprimeable number, because it can be changed into a prime (1423231301) 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, 240405 + ... + 246253.

It is an arithmetic number, because the mean of its divisors is an integer number (180896625).

Almost surely, 2^1423231321 is an apocalyptic number.

It is an amenable number.

1423231321 is a deficient number, since it is larger than the sum of its proper divisors (23941679).

1423231321 is an equidigital number, since it uses as much as digits as its factorization.

1423231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9899.

The product of its digits is 864, while the sum is 22.

The square root of 1423231321 is about 37725.7381770059. The cubic root of 1423231321 is about 1124.8427950871.

Adding to 1423231321 its reverse (1231323241), we get a palindrome (2654554562).

The spelling of 1423231321 in words is "one billion, four hundred twenty-three million, two hundred thirty-one thousand, three hundred twenty-one".