23121332 has 12 divisors (see below), whose sum is σ = 43574916. Its totient is φ = 10671360.

The previous prime is 23121331. The next prime is 23121341. The reversal of 23121332 is 23312132.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 18438436 = 2164^2 + 4294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23121332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222269 + ... + 222372.

It is an arithmetic number, because the mean of its divisors is an integer number (3631243).

Almost surely, 2^23121332 is an apocalyptic number.

It is an amenable number.

23121332 is a deficient number, since it is larger than the sum of its proper divisors (20453584).

23121332 is a wasteful number, since it uses less digits than its factorization.

23121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444658 (or 444656 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 23121332 is about 4808.4646198137. The cubic root of 23121332 is about 284.8858966646.

Adding to 23121332 its reverse (23312132), we get a palindrome (46433464).

The spelling of 23121332 in words is "twenty-three million, one hundred twenty-one thousand, three hundred thirty-two".