1423502321 has 8 divisors (see below), whose sum is σ = 1428921000. Its totient is φ = 1418093440.

The previous prime is 1423502317. The next prime is 1423502371. The reversal of 1423502321 is 1232053241.

It can be written as a sum of positive squares in 4 ways, for example, as 703921 + 1422798400 = 839^2 + 37720^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1423502321 - 2² = 1423502317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423502371) 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, 411005 + ... + 414453.

It is an arithmetic number, because the mean of its divisors is an integer number (178615125).

Almost surely, 2^1423502321 is an apocalyptic number.

It is an amenable number.

1423502321 is a deficient number, since it is larger than the sum of its proper divisors (5418679).

1423502321 is a wasteful number, since it uses less digits than its factorization.

1423502321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1423502321 is about 37729.3297184034. The cubic root of 1423502321 is about 1124.9141849933.

Adding to 1423502321 its reverse (1232053241), we get a palindrome (2655555562).

The spelling of 1423502321 in words is "one billion, four hundred twenty-three million, five hundred two thousand, three hundred twenty-one".