12031722 has 24 divisors (see below), whose sum is σ = 26316576. Its totient is φ = 3972456.

The previous prime is 12031711. The next prime is 12031727. The reversal of 12031722 is 22713021.

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 = 12031695 and 12031704.

It is not an unprimeable number, because it can be changed into a prime (12031727) 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, 1198 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (1096524).

Almost surely, 2^12031722 is an apocalyptic number.

12031722 is an abundant number, since it is smaller than the sum of its proper divisors (14284854).

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

12031722 is a wasteful number, since it uses less digits than its factorization.

12031722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362 (or 6359 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12031722 is about 3468.6772695078. The cubic root of 12031722 is about 229.1444078142.

Adding to 12031722 its reverse (22713021), we get a palindrome (34744743).

The spelling of 12031722 in words is "twelve million, thirty-one thousand, seven hundred twenty-two".