3121203343 has 2 divisors, whose sum is σ = 3121203344. Its totient is φ = 3121203342.

The previous prime is 3121203299. The next prime is 3121203353. The reversal of 3121203343 is 3433021213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3121203343 - 2⁹ = 3121202831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121203353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560601671 + 1560601672.

It is an arithmetic number, because the mean of its divisors is an integer number (1560601672).

Almost surely, 2^3121203343 is an apocalyptic number.

3121203343 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121203343 is an equidigital number, since it uses as much as digits as its factorization.

3121203343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 3121203343 is about 55867.7307844162. The cubic root of 3121203343 is about 1461.4165495706.

Adding to 3121203343 its reverse (3433021213), we get a palindrome (6554224556).

The spelling of 3121203343 in words is "three billion, one hundred twenty-one million, two hundred three thousand, three hundred forty-three".