1123112013 has 8 divisors (see below), whose sum is σ = 1499652576. Its totient is φ = 747656400.

The previous prime is 1123111999. The next prime is 1123112083. The reversal of 1123112013 is 3102113211.

It is a happy number.

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

It is not a de Polignac number, because 1123112013 - 2²⁴ = 1106334797 is a prime.

It is a super-2 number, since 2×1123112013² = 2522761187489824338, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1123111983 and 1123112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123112083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268818 + ... + 272963.

It is an arithmetic number, because the mean of its divisors is an integer number (187456572).

Almost surely, 2^1123112013 is an apocalyptic number.

It is an amenable number.

1123112013 is a deficient number, since it is larger than the sum of its proper divisors (376540563).

1123112013 is an equidigital number, since it uses as much as digits as its factorization.

1123112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542475.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1123112013 is about 33512.8633960156. The cubic root of 1123112013 is about 1039.4597826162.

Adding to 1123112013 its reverse (3102113211), we get a palindrome (4225225224).

The spelling of 1123112013 in words is "one billion, one hundred twenty-three million, one hundred twelve thousand, thirteen".