1113140123 has 4 divisors (see below), whose sum is σ = 1113397680. Its totient is φ = 1112882568.

The previous prime is 1113140107. The next prime is 1113140129. The reversal of 1113140123 is 3210413111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3210413111 = 37493 ⋅85627.

It is a cyclic number.

It is not a de Polignac number, because 1113140123 - 2⁴ = 1113140107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113140129) 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, 122183 + ... + 130976.

It is an arithmetic number, because the mean of its divisors is an integer number (278349420).

Almost surely, 2^1113140123 is an apocalyptic number.

1113140123 is a deficient number, since it is larger than the sum of its proper divisors (257557).

1113140123 is an equidigital number, since it uses as much as digits as its factorization.

1113140123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257556.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1113140123 is about 33363.7546298375. The cubic root of 1113140123 is about 1036.3742464458.

Adding to 1113140123 its reverse (3210413111), we get a palindrome (4323553234).

The spelling of 1113140123 in words is "one billion, one hundred thirteen million, one hundred forty thousand, one hundred twenty-three".