1123020031103 has 4 divisors (see below), whose sum is σ = 1127074255320. Its totient is φ = 1118965806888.

The previous prime is 1123020031069. The next prime is 1123020031117. The reversal of 1123020031103 is 3011300203211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123020031103 - 2¹⁰ = 1123020030079 is a prime.

It is a super-2 number, since 2×1123020031103² (a number of 25 digits) 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 (1123020031193) 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, 2027111693 + ... + 2027112246.

It is an arithmetic number, because the mean of its divisors is an integer number (281768563830).

Almost surely, 2^{1123020031103} is an apocalyptic number.

1123020031103 is a deficient number, since it is larger than the sum of its proper divisors (4054224217).

1123020031103 is an equidigital number, since it uses as much as digits as its factorization.

1123020031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054224216.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1123020031103 its reverse (3011300203211), we get a palindrome (4134320234314).

The spelling of 1123020031103 in words is "one trillion, one hundred twenty-three billion, twenty million, thirty-one thousand, one hundred three".