1000013000043 has 4 divisors (see below), whose sum is σ = 1333350666728. Its totient is φ = 666675333360.

The previous prime is 1000013000039. The next prime is 1000013000111. The reversal of 1000013000043 is 3400003100001.

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

It is not a de Polignac number, because 1000013000043 - 2² = 1000013000039 is a prime.

It is a super-3 number, since 3×1000013000043³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is the 1000007-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000012999992 and 1000013000028.

It is not an unprimeable number, because it can be changed into a prime (1000013000033) by changing a digit.

It is a nontrivial repunit in base 1000006.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166668833338 + ... + 166668833343.

It is an arithmetic number, because the mean of its divisors is an integer number (333337666682).

Almost surely, 2^{1000013000043} is an apocalyptic number.

1000013000043 is a deficient number, since it is larger than the sum of its proper divisors (333337666685).

1000013000043 is an equidigital number, since it uses as much as digits as its factorization.

1000013000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333337666684.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 1000013000043 its reverse (3400003100001), we get a palindrome (4400016100044).

The spelling of 1000013000043 in words is "one trillion, thirteen million, forty-three", and thus it is an aban number and an uban number.