1021401343 has 2 divisors, whose sum is σ = 1021401344. Its totient is φ = 1021401342.

The previous prime is 1021401313. The next prime is 1021401347. The reversal of 1021401343 is 3431041201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021401343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021401343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021401347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510700671 + 510700672.

It is an arithmetic number, because the mean of its divisors is an integer number (510700672).

Almost surely, 2^1021401343 is an apocalyptic number.

1021401343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021401343 is an equidigital number, since it uses as much as digits as its factorization.

1021401343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1021401343 is about 31959.3701909158. The cubic root of 1021401343 is about 1007.0834867424.

Adding to 1021401343 its reverse (3431041201), we get a palindrome (4452442544).

The spelling of 1021401343 in words is "one billion, twenty-one million, four hundred one thousand, three hundred forty-three".