1023002100543 has 4 divisors (see below), whose sum is σ = 1364002800728. Its totient is φ = 682001400360.

The previous prime is 1023002100521. The next prime is 1023002100551. The reversal of 1023002100543 is 3450012003201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1023002100543 - 2⁸ = 1023002100287 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 (1023002100583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170500350088 + ... + 170500350093.

It is an arithmetic number, because the mean of its divisors is an integer number (341000700182).

Almost surely, 2^{1023002100543} is an apocalyptic number.

1023002100543 is a deficient number, since it is larger than the sum of its proper divisors (341000700185).

1023002100543 is an equidigital number, since it uses as much as digits as its factorization.

1023002100543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341000700184.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 1023002100543 its reverse (3450012003201), we get a palindrome (4473014103744).

The spelling of 1023002100543 in words is "one trillion, twenty-three billion, two million, one hundred thousand, five hundred forty-three".