3445232321 has 4 divisors (see below), whose sum is σ = 3445738032. Its totient is φ = 3444726612.

The previous prime is 3445232293. The next prime is 3445232341. The reversal of 3445232321 is 1232325443.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3445232321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3445232341) 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, 242495 + ... + 256308.

It is an arithmetic number, because the mean of its divisors is an integer number (861434508).

Almost surely, 2^3445232321 is an apocalyptic number.

It is an amenable number.

3445232321 is a deficient number, since it is larger than the sum of its proper divisors (505711).

3445232321 is an equidigital number, since it uses as much as digits as its factorization.

3445232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505710.

The product of its digits is 17280, while the sum is 29.

The square root of 3445232321 is about 58696.1014122744. The cubic root of 3445232321 is about 1510.3334381990. Note that the first 3 decimals are identical.

Adding to 3445232321 its reverse (1232325443), we get a palindrome (4677557764).

The spelling of 3445232321 in words is "three billion, four hundred forty-five million, two hundred thirty-two thousand, three hundred twenty-one".