3123331231 has 2 divisors, whose sum is σ = 3123331232. Its totient is φ = 3123331230.

The previous prime is 3123331151. The next prime is 3123331249. The reversal of 3123331231 is 1321333213.

It is a strong prime.

It is an emirp because it is prime and its reverse (1321333213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3123331231 - 2¹⁷ = 3123200159 is a prime.

It is a super-2 number, since 2×3123331231² = 19510395957079950722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123331271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561665615 + 1561665616.

It is an arithmetic number, because the mean of its divisors is an integer number (1561665616).

Almost surely, 2^3123331231 is an apocalyptic number.

3123331231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123331231 is an equidigital number, since it uses as much as digits as its factorization.

3123331231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 22.

The square root of 3123331231 is about 55886.7715206380. The cubic root of 3123331231 is about 1461.7485822276.

Adding to 3123331231 its reverse (1321333213), we get a palindrome (4444664444).

The spelling of 3123331231 in words is "three billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred thirty-one".