13243311020 has 12 divisors (see below), whose sum is σ = 27810953184. Its totient is φ = 5297324400.

The previous prime is 13243311017. The next prime is 13243311043. The reversal of 13243311020 is 2011334231.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 662165551 = 13243311020 / (1 + 3 + 2 + 4 + 3 + 3 + 1 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 13243310983 and 13243311001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331082756 + ... + 331082795.

It is an arithmetic number, because the mean of its divisors is an integer number (2317579432).

Almost surely, 2^13243311020 is an apocalyptic number.

13243311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13243311020 is an abundant number, since it is smaller than the sum of its proper divisors (14567642164).

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

13243311020 is a wasteful number, since it uses less digits than its factorization.

13243311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662165560 (or 662165558 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13243311020 its reverse (2011334231), we get a palindrome (15254645251).

The spelling of 13243311020 in words is "thirteen billion, two hundred forty-three million, three hundred eleven thousand, twenty".