13313023020 has 144 divisors (see below), whose sum is σ = 44508810528. Its totient is φ = 3194081280.

The previous prime is 13313023013. The next prime is 13313023027. The reversal of 13313023020 is 2032031331.

13313023020 is a `hidden beast` number, since 1 + 331 + 30 + 2 + 302 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (13313023013) and next prime (13313023027).

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 = 13313022984 and 13313023002.

It is not an unprimeable number, because it can be changed into a prime (13313023027) 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, 157402 + ... + 226718.

It is an arithmetic number, because the mean of its divisors is an integer number (309088962).

Almost surely, 2^13313023020 is an apocalyptic number.

13313023020 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 13313023020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22254405264).

13313023020 is an abundant number, since it is smaller than the sum of its proper divisors (31195787508).

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

13313023020 is a wasteful number, since it uses less digits than its factorization.

13313023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69440 (or 69435 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13313023020 its reverse (2032031331), we get a palindrome (15345054351).

The spelling of 13313023020 in words is "thirteen billion, three hundred thirteen million, twenty-three thousand, twenty".