12031101 has 12 divisors (see below), whose sum is σ = 17437212. Its totient is φ = 7993536.

The previous prime is 12031079. The next prime is 12031111. The reversal of 12031101 is 10113021.

12031101 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5405625 + 6625476 = 2325^2 + 2574^2 .

It is not a de Polignac number, because 12031101 - 2¹¹ = 12029053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 745 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (1453101).

Almost surely, 2^12031101 is an apocalyptic number.

It is an amenable number.

12031101 is a deficient number, since it is larger than the sum of its proper divisors (5406111).

12031101 is a wasteful number, since it uses less digits than its factorization.

12031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540 (or 4537 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 12031101 is about 3468.5877529623. The cubic root of 12031101 is about 229.1404654269.

Adding to 12031101 its reverse (10113021), we get a palindrome (22144122).

It can be divided in two parts, 1203 and 1101, that added together give a square (2304 = 48²).

The spelling of 12031101 in words is "twelve million, thirty-one thousand, one hundred one".