3343718921 has 2 divisors, whose sum is σ = 3343718922. Its totient is φ = 3343718920.

The previous prime is 3343718893. The next prime is 3343718953. The reversal of 3343718921 is 1298173433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2794285321 + 549433600 = 52861^2 + 23440^2 .

It is an emirp because it is prime and its reverse (1298173433) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3343718921 is a prime.

It is a super-2 number, since 2×3343718921² = 22360912445306808482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3343718981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1671859460 + 1671859461.

It is an arithmetic number, because the mean of its divisors is an integer number (1671859461).

Almost surely, 2^3343718921 is an apocalyptic number.

It is an amenable number.

3343718921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3343718921 is an equidigital number, since it uses as much as digits as its factorization.

3343718921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 3343718921 is about 57824.8987980091. The cubic root of 3343718921 is about 1495.3513744769.

The spelling of 3343718921 in words is "three billion, three hundred forty-three million, seven hundred eighteen thousand, nine hundred twenty-one".