1103131112020 has 24 divisors (see below), whose sum is σ = 2647514669184. Its totient is φ = 378216381216.

The previous prime is 1103131111991. The next prime is 1103131112029. The reversal of 1103131112020 is 202111313011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1103131111985 and 1103131112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103131112029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939753832 + ... + 3939754111.

It is an arithmetic number, because the mean of its divisors is an integer number (110313111216).

Almost surely, 2^{1103131112020} is an apocalyptic number.

1103131112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103131112020 is an abundant number, since it is smaller than the sum of its proper divisors (1544383557164).

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

1103131112020 is a wasteful number, since it uses less digits than its factorization.

1103131112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7879507959 (or 7879507957 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1103131112020 its reverse (202111313011), we get a palindrome (1305242425031).

The spelling of 1103131112020 in words is "one trillion, one hundred three billion, one hundred thirty-one million, one hundred twelve thousand, twenty".