23012213 has 16 divisors (see below), whose sum is σ = 28012800. Its totient is φ = 18860688.

The previous prime is 23012191. The next prime is 23012219. The reversal of 23012213 is 31221032.

It is a happy number.

It is not a de Polignac number, because 23012213 - 2⁶ = 23012149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6431 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (1750800).

Almost surely, 2^23012213 is an apocalyptic number.

23012213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23012213 is a deficient number, since it is larger than the sum of its proper divisors (5000587).

23012213 is an equidigital number, since it uses as much as digits as its factorization.

23012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961 (or 2947 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23012213 is about 4797.1046475973. The cubic root of 23012213 is about 284.4370255238.

Adding to 23012213 its reverse (31221032), we get a palindrome (54233245).

The spelling of 23012213 in words is "twenty-three million, twelve thousand, two hundred thirteen".