231213101333133 has 16 divisors (see below), whose sum is σ = 315701255946240. Its totient is φ = 150451379719536.

The previous prime is 231213101333059. The next prime is 231213101333141. The reversal of 231213101333133 is 331333101312132.

It is not a de Polignac number, because 231213101333133 - 2⁹ = 231213101332621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231213101333133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213106333133) 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, 2234020773 + ... + 2234124266.

It is an arithmetic number, because the mean of its divisors is an integer number (19731328496640).

Almost surely, 2^{231213101333133} is an apocalyptic number.

It is an amenable number.

231213101333133 is a deficient number, since it is larger than the sum of its proper divisors (84488154613107).

231213101333133 is a wasteful number, since it uses less digits than its factorization.

231213101333133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468145456.

The product of its (nonzero) digits is 8748, while the sum is 30.

Adding to 231213101333133 its reverse (331333101312132), we get a palindrome (562546202645265).

The spelling of 231213101333133 in words is "two hundred thirty-one trillion, two hundred thirteen billion, one hundred one million, three hundred thirty-three thousand, one hundred thirty-three".