13023231220 has 48 divisors (see below), whose sum is σ = 27503723520. Its totient is φ = 5179838976.

The previous prime is 13023231203. The next prime is 13023231233. The reversal of 13023231220 is 2213232031.

It is a congruent number.

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, 6952204 + ... + 6954076.

It is an arithmetic number, because the mean of its divisors is an integer number (572994240).

Almost surely, 2^13023231220 is an apocalyptic number.

13023231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13023231220 is an abundant number, since it is smaller than the sum of its proper divisors (14480492300).

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

13023231220 is a wasteful number, since it uses less digits than its factorization.

13023231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13023231220 its reverse (2213232031), we get a palindrome (15236463251).

The spelling of 13023231220 in words is "thirteen billion, twenty-three million, two hundred thirty-one thousand, two hundred twenty".