1123012113 has 4 divisors (see below), whose sum is σ = 1497349488. Its totient is φ = 748674740.

The previous prime is 1123012109. The next prime is 1123012117. The reversal of 1123012113 is 3112103211.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (1123012109) and next prime (1123012117).

It is a cyclic number.

It is not a de Polignac number, because 1123012113 - 2² = 1123012109 is a prime.

It is a super-2 number, since 2×1123012113² = 2522312411889449538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123012092 and 1123012101.

It is not an unprimeable number, because it can be changed into a prime (1123012117) 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, 187168683 + ... + 187168688.

It is an arithmetic number, because the mean of its divisors is an integer number (374337372).

Almost surely, 2^1123012113 is an apocalyptic number.

It is an amenable number.

1123012113 is a deficient number, since it is larger than the sum of its proper divisors (374337375).

1123012113 is an equidigital number, since it uses as much as digits as its factorization.

1123012113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374337374.

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

The square root of 1123012113 is about 33511.3728904084. The cubic root of 1123012113 is about 1039.4289619708.

Adding to 1123012113 its reverse (3112103211), we get a palindrome (4235115324).

The spelling of 1123012113 in words is "one billion, one hundred twenty-three million, twelve thousand, one hundred thirteen".