230021202312 has 72 divisors (see below), whose sum is σ = 684756669870. Its totient is φ = 69703392000.

The previous prime is 230021202289. The next prime is 230021202319. The reversal of 230021202312 is 213202120032.

230021202312 is a `hidden beast` number, since 230 + 0 + 2 + 120 + 2 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 186826230756 + 43194971556 = 432234^2 + 207834^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (230021202319) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13192689 + ... + 13210112.

Almost surely, 2^230021202312 is an apocalyptic number.

230021202312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

230021202312 is an abundant number, since it is smaller than the sum of its proper divisors (454735467558).

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

230021202312 is a wasteful number, since it uses less digits than its factorization.

230021202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26402835 (or 26402817 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 230021202312 its reverse (213202120032), we get a palindrome (443223322344).

The spelling of 230021202312 in words is "two hundred thirty billion, twenty-one million, two hundred two thousand, three hundred twelve".