13231100 has 72 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 4838400.

The previous prime is 13231067. The next prime is 13231103. The reversal of 13231100 is 113231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73010 + ... + 73190.

It is an arithmetic number, because the mean of its divisors is an integer number (434434).

Almost surely, 2^13231100 is an apocalyptic number.

13231100 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 13231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15639624).

13231100 is an abundant number, since it is smaller than the sum of its proper divisors (18048148).

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

13231100 is a wasteful number, since it uses less digits than its factorization.

13231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13231100 is about 3637.4579035365. The cubic root of 13231100 is about 236.5186095933.

Adding to 13231100 its reverse (113231), we get a palindrome (13344331).

It can be divided in two parts, 13231 and 100, that added together give a palindrome (13331).

The spelling of 13231100 in words is "thirteen million, two hundred thirty-one thousand, one hundred".