1123103120 has 20 divisors (see below), whose sum is σ = 2611214940. Its totient is φ = 449241216.

The previous prime is 1123103099. The next prime is 1123103131. The reversal of 1123103120 is 213013211.

It can be written as a sum of positive squares in 2 ways, for example, as 543449344 + 579653776 = 23312^2 + 24076^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1123103120² = 2522721236307468800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123103095 and 1123103104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7019315 + ... + 7019474.

It is an arithmetic number, because the mean of its divisors is an integer number (130560747).

Almost surely, 2^1123103120 is an apocalyptic number.

1123103120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123103120 is an abundant number, since it is smaller than the sum of its proper divisors (1488111820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123103120 is a wasteful number, since it uses less digits than its factorization.

1123103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14038802 (or 14038796 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1123103120 is about 33512.7307153565. The cubic root of 1123103120 is about 1039.4570390667.

Adding to 1123103120 its reverse (213013211), we get a palindrome (1336116331).

The spelling of 1123103120 in words is "one billion, one hundred twenty-three million, one hundred three thousand, one hundred twenty".