23203030212 has 18 divisors (see below), whose sum is σ = 58652104238. Its totient is φ = 7734343392.

The previous prime is 23203030199. The next prime is 23203030229. The reversal of 23203030212 is 21203030232.

It is a happy number.

23203030212 is a `hidden beast` number, since 2 + 320 + 30 + 302 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17724661956 + 5478368256 = 133134^2 + 74016^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×23203030212² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322264273 + ... + 322264344.

Almost surely, 2^23203030212 is an apocalyptic number.

It is an amenable number.

23203030212 is an abundant number, since it is smaller than the sum of its proper divisors (35449074026).

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

23203030212 is a wasteful number, since it uses less digits than its factorization.

23203030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644528627 (or 644528622 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 23203030212 its reverse (21203030232), we get a palindrome (44406060444).

The spelling of 23203030212 in words is "twenty-three billion, two hundred three million, thirty thousand, two hundred twelve".