1123113013 has 4 divisors (see below), whose sum is σ = 1225214208. Its totient is φ = 1021011820.

The previous prime is 1123113011. The next prime is 1123113037. The reversal of 1123113013 is 3103113211.

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: 3103113211 = 11 ⋅282101201.

It is a cyclic number.

It is not a de Polignac number, because 1123113013 - 2¹ = 1123113011 is a prime.

It is a super-2 number, since 2×1123113013² = 2522765679939876338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123113011) 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, 51050581 + ... + 51050602.

It is an arithmetic number, because the mean of its divisors is an integer number (306303552).

Almost surely, 2^1123113013 is an apocalyptic number.

It is an amenable number.

1123113013 is a deficient number, since it is larger than the sum of its proper divisors (102101195).

1123113013 is a wasteful number, since it uses less digits than its factorization.

1123113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102101194.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1123113013 is about 33512.8783156565. The cubic root of 1123113013 is about 1039.4600911219.

Adding to 1123113013 its reverse (3103113211), we get a palindrome (4226226224).

The spelling of 1123113013 in words is "one billion, one hundred twenty-three million, one hundred thirteen thousand, thirteen".