1021340343 has 16 divisors (see below), whose sum is σ = 1403652096. Its totient is φ = 660192960.

The previous prime is 1021340261. The next prime is 1021340371. The reversal of 1021340343 is 3430431201.

It is not a de Polignac number, because 1021340343 - 2⁸ = 1021340087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021340143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11223 + ... + 46568.

It is an arithmetic number, because the mean of its divisors is an integer number (87728256).

Almost surely, 2^1021340343 is an apocalyptic number.

1021340343 is a deficient number, since it is larger than the sum of its proper divisors (382311753).

1021340343 is a wasteful number, since it uses less digits than its factorization.

1021340343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57974.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1021340343 is about 31958.4158399630. The cubic root of 1021340343 is about 1007.0634380397.

Adding to 1021340343 its reverse (3430431201), we get a palindrome (4451771544).

The spelling of 1021340343 in words is "one billion, twenty-one million, three hundred forty thousand, three hundred forty-three".