231200221113133 has 4 divisors (see below), whose sum is σ = 231289384332508. Its totient is φ = 231111057893760.

The previous prime is 231200221113109. The next prime is 231200221113181. The reversal of 231200221113133 is 331311122002132.

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 63271874827044 + 167928346286089 = 7954362^2 + 12958717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231200221113133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231200221113098 and 231200221113107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200221113233) 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, 44581605798 + ... + 44581610983.

It is an arithmetic number, because the mean of its divisors is an integer number (57822346083127).

Almost surely, 2^{231200221113133} is an apocalyptic number.

It is an amenable number.

231200221113133 is a deficient number, since it is larger than the sum of its proper divisors (89163219375).

231200221113133 is an equidigital number, since it uses as much as digits as its factorization.

231200221113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89163219374.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231200221113133 its reverse (331311122002132), we get a palindrome (562511343115265).

The spelling of 231200221113133 in words is "two hundred thirty-one trillion, two hundred billion, two hundred twenty-one million, one hundred thirteen thousand, one hundred thirty-three".