1103143020 has 96 divisors (see below), whose sum is σ = 3683570688. Its totient is φ = 241181952.

The previous prime is 1103142991. The next prime is 1103143051. The reversal of 1103143020 is 203413011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47439 + ... + 66758.

It is an arithmetic number, because the mean of its divisors is an integer number (38370528).

Almost surely, 2^1103143020 is an apocalyptic number.

1103143020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103143020 is an abundant number, since it is smaller than the sum of its proper divisors (2580427668).

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

1103143020 is a wasteful number, since it uses less digits than its factorization.

1103143020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114239 (or 114237 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1103143020 is about 33213.5969145168. The cubic root of 1103143020 is about 1033.2623553976.

Adding to 1103143020 its reverse (203413011), we get a palindrome (1306556031).

The spelling of 1103143020 in words is "one billion, one hundred three million, one hundred forty-three thousand, twenty".