231011233302133 has 2 divisors, whose sum is σ = 231011233302134. Its totient is φ = 231011233302132.

The previous prime is 231011233302089. The next prime is 231011233302151. The reversal of 231011233302133 is 331203332110132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156181432524049 + 74829800778084 = 12497257^2 + 8650422^2 .

It is a cyclic number.

It is not a de Polignac number, because 231011233302133 - 2⁹ = 231011233301621 is a prime.

It is a super-2 number, since 2×231011233302133² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231011233302233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115505616651066 + 115505616651067.

It is an arithmetic number, because the mean of its divisors is an integer number (115505616651067).

Almost surely, 2^{231011233302133} is an apocalyptic number.

It is an amenable number.

231011233302133 is a deficient number, since it is larger than the sum of its proper divisors (1).

231011233302133 is an equidigital number, since it uses as much as digits as its factorization.

231011233302133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 231011233302133 its reverse (331203332110132), we get a palindrome (562214565412265).

The spelling of 231011233302133 in words is "two hundred thirty-one trillion, eleven billion, two hundred thirty-three million, three hundred two thousand, one hundred thirty-three".