3121320223 has 16 divisors (see below), whose sum is σ = 3657842944. Its totient is φ = 2608277760.

The previous prime is 3121320211. The next prime is 3121320227. The reversal of 3121320223 is 3220231213.

3121320223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121320223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121320223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121320227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11188 + ... + 79798.

It is an arithmetic number, because the mean of its divisors is an integer number (228615184).

Almost surely, 2^3121320223 is an apocalyptic number.

3121320223 is a deficient number, since it is larger than the sum of its proper divisors (536522721).

3121320223 is an equidigital number, since it uses as much as digits as its factorization.

3121320223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68782.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 3121320223 is about 55868.7768167516. The cubic root of 3121320223 is about 1461.4347912780.

Adding to 3121320223 its reverse (3220231213), we get a palindrome (6341551436).

The spelling of 3121320223 in words is "three billion, one hundred twenty-one million, three hundred twenty thousand, two hundred twenty-three".