1023121343 has 4 divisors (see below), whose sum is σ = 1030589520. Its totient is φ = 1015653168.

The previous prime is 1023121313. The next prime is 1023121409. The reversal of 1023121343 is 3431213201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431213201 = 13 ⋅263939477.

It is a cyclic number.

It is not a de Polignac number, because 1023121343 - 2⁶ = 1023121279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023121313) 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 3 ways as a sum of consecutive naturals, for example, 3733883 + ... + 3734156.

It is an arithmetic number, because the mean of its divisors is an integer number (257647380).

Almost surely, 2^1023121343 is an apocalyptic number.

1023121343 is a deficient number, since it is larger than the sum of its proper divisors (7468177).

1023121343 is an equidigital number, since it uses as much as digits as its factorization.

1023121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7468176.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1023121343 is about 31986.2680380191. The cubic root of 1023121343 is about 1007.6484661562.

Adding to 1023121343 its reverse (3431213201), we get a palindrome (4454334544).

The spelling of 1023121343 in words is "one billion, twenty-three million, one hundred twenty-one thousand, three hundred forty-three".