1013213543 has 4 divisors (see below), whose sum is σ = 1015620648. Its totient is φ = 1010806440.

The previous prime is 1013213527. The next prime is 1013213557. The reversal of 1013213543 is 3453123101.

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

It is a cyclic number.

It is not a de Polignac number, because 1013213543 - 2⁴ = 1013213527 is a prime.

It is a super-2 number, since 2×1013213543² = 2053203367437225698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013213573) 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, 1202921 + ... + 1203762.

It is an arithmetic number, because the mean of its divisors is an integer number (253905162).

Almost surely, 2^1013213543 is an apocalyptic number.

1013213543 is a deficient number, since it is larger than the sum of its proper divisors (2407105).

1013213543 is an equidigital number, since it uses as much as digits as its factorization.

1013213543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407104.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1013213543 is about 31831.0154252107. The cubic root of 1013213543 is about 1004.3852557551.

Adding to 1013213543 its reverse (3453123101), we get a palindrome (4466336644).

The spelling of 1013213543 in words is "one billion, thirteen million, two hundred thirteen thousand, five hundred forty-three".