231021300000233 has 4 divisors (see below), whose sum is σ = 231421683536340. Its totient is φ = 230620916464128.

The previous prime is 231021300000209. The next prime is 231021300000313. The reversal of 231021300000233 is 332000003120132.

231021300000233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204641951417344 + 26379348582889 = 14305312^2 + 5136083^2 .

It is a cyclic number.

It is not a de Polignac number, because 231021300000233 - 2¹⁶ = 231021299934697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231021300030233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200191767188 + ... + 200191768341.

It is an arithmetic number, because the mean of its divisors is an integer number (57855420884085).

Almost surely, 2^{231021300000233} is an apocalyptic number.

It is an amenable number.

231021300000233 is a deficient number, since it is larger than the sum of its proper divisors (400383536107).

231021300000233 is an equidigital number, since it uses as much as digits as its factorization.

231021300000233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400383536106.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231021300000233 its reverse (332000003120132), we get a palindrome (563021303120365).

The spelling of 231021300000233 in words is "two hundred thirty-one trillion, twenty-one billion, three hundred million, two hundred thirty-three", and thus it is an aban number.