3123580321 has 3 divisors (see below), whose sum is σ = 3123636211. Its totient is φ = 3123524432.

The previous prime is 3123580309. The next prime is 3123580331. The reversal of 3123580321 is 1230853213.

The square root of 3123580321 is 55889.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2776130721 + 347449600 = 52689^2 + 18640^2 .

It is not a de Polignac number, because 3123580321 - 2³¹ = 976096673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123580321.

It is not an unprimeable number, because it can be changed into a prime (3123580331) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27945 + ... + 83833.

Almost surely, 2^3123580321 is an apocalyptic number.

3123580321 is the 55889-th square number.

3123580321 is the 27945-th centered octagonal number.

It is an amenable number.

3123580321 is a deficient number, since it is larger than the sum of its proper divisors (55890).

3123580321 is an frugal number, since it uses more digits than its factorization.

3123580321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111778 (or 55889 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The cubic root of 3123580321 is about 1461.7874400206.

It can be divided in two parts, 31235 and 80321, that added together give a square (111556 = 334²).

The spelling of 3123580321 in words is "three billion, one hundred twenty-three million, five hundred eighty thousand, three hundred twenty-one".