21312000030231 has 8 divisors (see below), whose sum is σ = 31573333378160. Its totient is φ = 14208000020136.

The previous prime is 21312000030221. The next prime is 21312000030289. The reversal of 21312000030231 is 13203000021312.

21312000030231 is a `hidden beast` number, since 2 + 131 + 200 + 0 + 0 + 302 + 31 = 666.

It is not a de Polignac number, because 21312000030231 - 2¹¹ = 21312000028183 is a prime.

It is a super-2 number, since 2×21312000030231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312000030221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394666667200 + ... + 394666667253.

It is an arithmetic number, because the mean of its divisors is an integer number (3946666672270).

Almost surely, 2^{21312000030231} is an apocalyptic number.

21312000030231 is a deficient number, since it is larger than the sum of its proper divisors (10261333347929).

21312000030231 is an equidigital number, since it uses as much as digits as its factorization.

21312000030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789333334462 (or 789333334456 counting only the distinct ones).

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

Adding to 21312000030231 its reverse (13203000021312), we get a palindrome (34515000051543).

The spelling of 21312000030231 in words is "twenty-one trillion, three hundred twelve billion, thirty thousand, two hundred thirty-one".