3143204321 has 4 divisors (see below), whose sum is σ = 3146039700. Its totient is φ = 3140368944.

The previous prime is 3143204263. The next prime is 3143204327. The reversal of 3143204321 is 1234023413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1234023413 = 7 ⋅176289059.

It can be written as a sum of positive squares in 2 ways, for example, as 1373740096 + 1769464225 = 37064^2 + 42065^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143204321 - 2²⁶ = 3076095457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3143204327) 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, 1416026 + ... + 1418243.

It is an arithmetic number, because the mean of its divisors is an integer number (786509925).

Almost surely, 2^3143204321 is an apocalyptic number.

It is an amenable number.

3143204321 is a deficient number, since it is larger than the sum of its proper divisors (2835379).

3143204321 is a wasteful number, since it uses less digits than its factorization.

3143204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835378.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3143204321 is about 56064.2873940265. The cubic root of 3143204321 is about 1464.8422946796.

Adding to 3143204321 its reverse (1234023413), we get a palindrome (4377227734).

The spelling of 3143204321 in words is "three billion, one hundred forty-three million, two hundred four thousand, three hundred twenty-one".