3123221303231 has 2 divisors, whose sum is σ = 3123221303232. Its totient is φ = 3123221303230.

The previous prime is 3123221303221. The next prime is 3123221303249. The reversal of 3123221303231 is 1323031223213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123221303231 is a prime.

It is a super-2 number, since 2×3123221303231² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3123221303231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123221303221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561610651615 + 1561610651616.

It is an arithmetic number, because the mean of its divisors is an integer number (1561610651616).

Almost surely, 2^{3123221303231} is an apocalyptic number.

3123221303231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123221303231 is an equidigital number, since it uses as much as digits as its factorization.

3123221303231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 3123221303231 its reverse (1323031223213), we get a palindrome (4446252526444).

The spelling of 3123221303231 in words is "three trillion, one hundred twenty-three billion, two hundred twenty-one million, three hundred three thousand, two hundred thirty-one".