23213013012 has 72 divisors (see below), whose sum is σ = 67723848192. Its totient is φ = 6566616000.

The previous prime is 23213013011. The next prime is 23213013037. The reversal of 23213013012 is 21031031232.

23213013012 is a `hidden beast` number, since 2 + 321 + 301 + 30 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213013011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430564 + ... + 481467.

Almost surely, 2^23213013012 is an apocalyptic number.

It is an amenable number.

23213013012 is an abundant number, since it is smaller than the sum of its proper divisors (44510835180).

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

23213013012 is a wasteful number, since it uses less digits than its factorization.

23213013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912149 (or 912144 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23213013012 its reverse (21031031232), we get a palindrome (44244044244).

The spelling of 23213013012 in words is "twenty-three billion, two hundred thirteen million, thirteen thousand, twelve".