231213011322133 has 16 divisors (see below), whose sum is σ = 231586584509952. Its totient is φ = 230839764408000.

The previous prime is 231213011322127. The next prime is 231213011322221. The reversal of 231213011322133 is 331223110312132.

It is a cyclic number.

It is not a de Polignac number, because 231213011322133 - 2¹⁷ = 231213011191061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213011322103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20620079235 + ... + 20620090447.

It is an arithmetic number, because the mean of its divisors is an integer number (14474161531872).

Almost surely, 2^{231213011322133} is an apocalyptic number.

It is an amenable number.

231213011322133 is a deficient number, since it is larger than the sum of its proper divisors (373573187819).

231213011322133 is a wasteful number, since it uses less digits than its factorization.

231213011322133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22956.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 231213011322133 its reverse (331223110312132), we get a palindrome (562436121634265).

The spelling of 231213011322133 in words is "two hundred thirty-one trillion, two hundred thirteen billion, eleven million, three hundred twenty-two thousand, one hundred thirty-three".