1103312320 has 112 divisors (see below), whose sum is σ = 2958852096. Its totient is φ = 388224000.

The previous prime is 1103312297. The next prime is 1103312363. The reversal of 1103312320 is 232133011.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1103312294 and 1103312303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104065 + ... + 114175.

Almost surely, 2^1103312320 is an apocalyptic number.

1103312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479426048).

1103312320 is an abundant number, since it is smaller than the sum of its proper divisors (1855539776).

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

1103312320 is a wasteful number, since it uses less digits than its factorization.

1103312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10170 (or 10160 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1103312320 is about 33216.1454717431. The cubic root of 1103312320 is about 1033.3152111517.

Adding to 1103312320 its reverse (232133011), we get a palindrome (1335445331).

The spelling of 1103312320 in words is "one billion, one hundred three million, three hundred twelve thousand, three hundred twenty".