1321024343 has 16 divisors (see below), whose sum is σ = 1453267200. Its totient is φ = 1195223040.

The previous prime is 1321024339. The next prime is 1321024351. The reversal of 1321024343 is 3434201231.

It is a cyclic number.

It is not a de Polignac number, because 1321024343 - 2² = 1321024339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321024363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334088 + ... + 338018.

It is an arithmetic number, because the mean of its divisors is an integer number (90829200).

Almost surely, 2^1321024343 is an apocalyptic number.

1321024343 is a deficient number, since it is larger than the sum of its proper divisors (132242857).

1321024343 is a wasteful number, since it uses less digits than its factorization.

1321024343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1321024343 is about 36345.8985719159. The cubic root of 1321024343 is about 1097.2449908158.

Adding to 1321024343 its reverse (3434201231), we get a palindrome (4755225574).

The spelling of 1321024343 in words is "one billion, three hundred twenty-one million, twenty-four thousand, three hundred forty-three".