1021311343 has 8 divisors (see below), whose sum is σ = 1147694688. Its totient is φ = 901759584.

The previous prime is 1021311341. The next prime is 1021311371. The reversal of 1021311343 is 3431131201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021311343 - 2¹ = 1021311341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021311343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021311341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1707580 + ... + 1708177.

It is an arithmetic number, because the mean of its divisors is an integer number (143461836).

Almost surely, 2^1021311343 is an apocalyptic number.

1021311343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021311343 is a deficient number, since it is larger than the sum of its proper divisors (126383345).

1021311343 is a wasteful number, since it uses less digits than its factorization.

1021311343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415793.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1021311343 is about 31957.9621221379. The cubic root of 1021311343 is about 1007.0539064092.

Adding to 1021311343 its reverse (3431131201), we get a palindrome (4452442544).

The spelling of 1021311343 in words is "one billion, twenty-one million, three hundred eleven thousand, three hundred forty-three".