1113343123 has 4 divisors (see below), whose sum is σ = 1113416200. Its totient is φ = 1113270048.

The previous prime is 1113343093. The next prime is 1113343139. The reversal of 1113343123 is 3213433111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113343123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113343094 and 1113343103.

It is not an unprimeable number, because it can be changed into a prime (1113343183) 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, 4065 + ... + 47362.

It is an arithmetic number, because the mean of its divisors is an integer number (278354050).

Almost surely, 2^1113343123 is an apocalyptic number.

1113343123 is a deficient number, since it is larger than the sum of its proper divisors (73077).

1113343123 is an equidigital number, since it uses as much as digits as its factorization.

1113343123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73076.

The product of its digits is 648, while the sum is 22.

The square root of 1113343123 is about 33366.7967146983. The cubic root of 1113343123 is about 1036.4372427628.

Adding to 1113343123 its reverse (3213433111), we get a palindrome (4326776234).

The spelling of 1113343123 in words is "one billion, one hundred thirteen million, three hundred forty-three thousand, one hundred twenty-three".