233121431330113 has 4 divisors (see below), whose sum is σ = 233122371428548. Its totient is φ = 233120491231680.

The previous prime is 233121431330101. The next prime is 233121431330129. The reversal of 233121431330113 is 311033134121332.

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 147257060042304 + 85864371287809 = 12134952^2 + 9266303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233121431330113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233121431330153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469677156 + ... + 470173237.

It is an arithmetic number, because the mean of its divisors is an integer number (58280592857137).

Almost surely, 2^{233121431330113} is an apocalyptic number.

It is an amenable number.

233121431330113 is a deficient number, since it is larger than the sum of its proper divisors (940098435).

233121431330113 is an equidigital number, since it uses as much as digits as its factorization.

233121431330113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940098434.

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 233121431330113 its reverse (311033134121332), we get a palindrome (544154565451445).

The spelling of 233121431330113 in words is "two hundred thirty-three trillion, one hundred twenty-one billion, four hundred thirty-one million, three hundred thirty thousand, one hundred thirteen".