1721103343 has 2 divisors, whose sum is σ = 1721103344. Its totient is φ = 1721103342.

The previous prime is 1721103269. The next prime is 1721103347. The reversal of 1721103343 is 3433011271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1721103343 - 2¹³ = 1721095151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1721103347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860551671 + 860551672.

It is an arithmetic number, because the mean of its divisors is an integer number (860551672).

Almost surely, 2^1721103343 is an apocalyptic number.

1721103343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1721103343 is an equidigital number, since it uses as much as digits as its factorization.

1721103343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1721103343 is about 41486.1825551593. The cubic root of 1721103343 is about 1198.4014230257.

The spelling of 1721103343 in words is "one billion, seven hundred twenty-one million, one hundred three thousand, three hundred forty-three".