1103143320 has 64 divisors (see below), whose sum is σ = 3677148000. Its totient is φ = 294171264.

The previous prime is 1103143309. The next prime is 1103143333. The reversal of 1103143320 is 233413011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1103143293 and 1103143302.

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, 509635 + ... + 511794.

Almost surely, 2^1103143320 is an apocalyptic number.

1103143320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103143320 is an abundant number, since it is smaller than the sum of its proper divisors (2574004680).

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

1103143320 is a wasteful number, since it uses less digits than its factorization.

1103143320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021449 (or 1021439 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1103143320 is about 33213.6014307392. The cubic root of 1103143320 is about 1033.2624490629.

Adding to 1103143320 its reverse (233413011), we get a palindrome (1336556331).

The spelling of 1103143320 in words is "one billion, one hundred three million, one hundred forty-three thousand, three hundred twenty".