1103303232020 has 144 divisors (see below), whose sum is σ = 2687040095040. Its totient is φ = 377250931200.

The previous prime is 1103303231999. The next prime is 1103303232029. The reversal of 1103303232020 is 202323033011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1103303231983 and 1103303232001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103303232029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6786080 + ... + 6946760.

It is an arithmetic number, because the mean of its divisors is an integer number (18660000660).

Almost surely, 2^{1103303232020} is an apocalyptic number.

1103303232020 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 1103303232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343520047520).

1103303232020 is an abundant number, since it is smaller than the sum of its proper divisors (1583736863020).

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

1103303232020 is a wasteful number, since it uses less digits than its factorization.

1103303232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160806 (or 160781 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1103303232020 its reverse (202323033011), we get a palindrome (1305626265031).

The spelling of 1103303232020 in words is "one trillion, one hundred three billion, three hundred three million, two hundred thirty-two thousand, twenty".