1001230543 has 4 divisors (see below), whose sum is σ = 1001711920. Its totient is φ = 1000749168.

The previous prime is 1001230523. The next prime is 1001230547. The reversal of 1001230543 is 3450321001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3450321001 = 283 ⋅12191947.

It is a cyclic number.

It is not a de Polignac number, because 1001230543 - 2⁹ = 1001230031 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 1001230543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001230547) 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, 237555 + ... + 241732.

It is an arithmetic number, because the mean of its divisors is an integer number (250427980).

Almost surely, 2^1001230543 is an apocalyptic number.

1001230543 is a deficient number, since it is larger than the sum of its proper divisors (481377).

1001230543 is an equidigital number, since it uses as much as digits as its factorization.

1001230543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481376.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1001230543 is about 31642.2272130139. The cubic root of 1001230543 is about 1000.4100128665.

Adding to 1001230543 its reverse (3450321001), we get a palindrome (4451551544).

The spelling of 1001230543 in words is "one billion, one million, two hundred thirty thousand, five hundred forty-three".