23251212 has 72 divisors (see below), whose sum is σ = 64209600. Its totient is φ = 7336656.

The previous prime is 23251199. The next prime is 23251237. The reversal of 23251212 is 21215232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17839 + ... + 19097.

It is an arithmetic number, because the mean of its divisors is an integer number (891800).

Almost surely, 2^23251212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23251212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32104800).

23251212 is an abundant number, since it is smaller than the sum of its proper divisors (40958388).

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

23251212 is a wasteful number, since it uses less digits than its factorization.

23251212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1283 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 23251212 is about 4821.9510574040. The cubic root of 23251212 is about 285.4183330241.

Adding to 23251212 its reverse (21215232), we get a palindrome (44466444).

The spelling of 23251212 in words is "twenty-three million, two hundred fifty-one thousand, two hundred twelve".