1043243213 has 4 divisors (see below), whose sum is σ = 1043312928. Its totient is φ = 1043173500.

The previous prime is 1043243207. The next prime is 1043243221. The reversal of 1043243213 is 3123423401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1043243213 - 2⁴ = 1043243197 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 (1043243273) 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, 2231 + ... + 45732.

It is an arithmetic number, because the mean of its divisors is an integer number (260828232).

Almost surely, 2^1043243213 is an apocalyptic number.

It is an amenable number.

1043243213 is a deficient number, since it is larger than the sum of its proper divisors (69715).

1043243213 is an equidigital number, since it uses as much as digits as its factorization.

1043243213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69714.

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

The square root of 1043243213 is about 32299.2757349139. The cubic root of 1043243213 is about 1014.2114813839.

Adding to 1043243213 its reverse (3123423401), we get a palindrome (4166666614).

The spelling of 1043243213 in words is "one billion, forty-three million, two hundred forty-three thousand, two hundred thirteen".