3126212231 has 2 divisors, whose sum is σ = 3126212232. Its totient is φ = 3126212230.

The previous prime is 3126212203. The next prime is 3126212281. The reversal of 3126212231 is 1322126213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3126212231 is a prime.

It is a super-2 number, since 2×3126212231² = 19546405826507994722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3126212197 and 3126212206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3126212281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563106115 + 1563106116.

It is an arithmetic number, because the mean of its divisors is an integer number (1563106116).

Almost surely, 2^3126212231 is an apocalyptic number.

3126212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3126212231 is an equidigital number, since it uses as much as digits as its factorization.

3126212231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 3126212231 is about 55912.5409098889. The cubic root of 3126212231 is about 1462.1978891979.

Adding to 3126212231 its reverse (1322126213), we get a palindrome (4448338444).

The spelling of 3126212231 in words is "three billion, one hundred twenty-six million, two hundred twelve thousand, two hundred thirty-one".