230331201966 has 20 divisors (see below), whose sum is σ = 516112508472. Its totient is φ = 76777067268.

The previous prime is 230331201917. The next prime is 230331201967. The reversal of 230331201966 is 669102133032.

It is a happy number.

230331201966 is a `hidden beast` number, since 2 + 30 + 331 + 201 + 96 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 230331201966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230331201967) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 710898610 + ... + 710898933.

Almost surely, 2^230331201966 is an apocalyptic number.

230331201966 is an abundant number, since it is smaller than the sum of its proper divisors (285781306506).

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

230331201966 is a wasteful number, since it uses less digits than its factorization.

230331201966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421797557 (or 1421797548 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

Adding to 230331201966 its reverse (669102133032), we get a palindrome (899433334998).

The spelling of 230331201966 in words is "two hundred thirty billion, three hundred thirty-one million, two hundred one thousand, nine hundred sixty-six".