1002232321 has 4 divisors (see below), whose sum is σ = 1002748500. Its totient is φ = 1001716144.

The previous prime is 1002232313. The next prime is 1002232327. The reversal of 1002232321 is 1232322001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232322001 = 239 ⋅5156159.

It can be written as a sum of positive squares in 2 ways, for example, as 504451600 + 497780721 = 22460^2 + 22311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002232321 - 2³ = 1002232313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002232295 and 1002232304.

It is not an unprimeable number, because it can be changed into a prime (1002232327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255166 + ... + 259063.

It is an arithmetic number, because the mean of its divisors is an integer number (250687125).

Almost surely, 2^1002232321 is an apocalyptic number.

It is an amenable number.

1002232321 is a deficient number, since it is larger than the sum of its proper divisors (516179).

1002232321 is an equidigital number, since it uses as much as digits as its factorization.

1002232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516178.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1002232321 is about 31658.0530197294. The cubic root of 1002232321 is about 1000.7435539904.

Adding to 1002232321 its reverse (1232322001), we get a palindrome (2234554322).

The spelling of 1002232321 in words is "one billion, two million, two hundred thirty-two thousand, three hundred twenty-one".