1113631043 has 8 divisors (see below), whose sum is σ = 1328057088. Its totient is φ = 913038984.

The previous prime is 1113631033. The next prime is 1113631049. The reversal of 1113631043 is 3401363111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1113631043 - 2⁶ = 1113630979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113631049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3458321 + ... + 3458642.

It is an arithmetic number, because the mean of its divisors is an integer number (166007136).

Almost surely, 2^1113631043 is an apocalyptic number.

1113631043 is a deficient number, since it is larger than the sum of its proper divisors (214426045).

1113631043 is an equidigital number, since it uses as much as digits as its factorization.

1113631043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6916993.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1113631043 is about 33371.1109044934. The cubic root of 1113631043 is about 1036.5265788907.

Adding to 1113631043 its reverse (3401363111), we get a palindrome (4514994154).

The spelling of 1113631043 in words is "one billion, one hundred thirteen million, six hundred thirty-one thousand, forty-three".