13200031020 has 48 divisors (see below), whose sum is σ = 40320096768. Its totient is φ = 3200007360.

The previous prime is 13200030973. The next prime is 13200031037. The reversal of 13200031020 is 2013000231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 13200030987 and 13200031005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9999364 + ... + 10000683.

It is an arithmetic number, because the mean of its divisors is an integer number (840002016).

Almost surely, 2^13200031020 is an apocalyptic number.

13200031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13200031020 is an abundant number, since it is smaller than the sum of its proper divisors (27120065748).

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

13200031020 is a wasteful number, since it uses less digits than its factorization.

13200031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000070 (or 20000068 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 13200031020 its reverse (2013000231), we get a palindrome (15213031251).

The spelling of 13200031020 in words is "thirteen billion, two hundred million, thirty-one thousand, twenty".