1113443013 has 4 divisors (see below), whose sum is σ = 1484590688. Its totient is φ = 742295340.

The previous prime is 1113443011. The next prime is 1113443017. The reversal of 1113443013 is 3103443111.

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 an emirpimes, since its reverse is a distinct semiprime: 3103443111 = 3 ⋅1034481037.

It is not a de Polignac number, because 1113443013 - 2¹ = 1113443011 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 (1113443011) 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, 185573833 + ... + 185573838.

It is an arithmetic number, because the mean of its divisors is an integer number (371147672).

Almost surely, 2^1113443013 is an apocalyptic number.

It is an amenable number.

1113443013 is a deficient number, since it is larger than the sum of its proper divisors (371147675).

1113443013 is an equidigital number, since it uses as much as digits as its factorization.

1113443013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371147674.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1113443013 is about 33368.2935284380. The cubic root of 1113443013 is about 1036.4682384843.

Adding to 1113443013 its reverse (3103443111), we get a palindrome (4216886124).

The spelling of 1113443013 in words is "one billion, one hundred thirteen million, four hundred forty-three thousand, thirteen".