233566134001213 has 16 divisors (see below), whose sum is σ = 258331943807280. Its totient is φ = 209771681389056.

The previous prime is 233566134001201. The next prime is 233566134001243. The reversal of 233566134001213 is 312100431665332.

It can be written as a sum of positive squares in 8 ways, for example, as 7635263187204 + 225930870814009 = 2763198^2 + 15030997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233566134001213 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 (233566134001243) 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, 147619383 + ... + 149193211.

It is an arithmetic number, because the mean of its divisors is an integer number (16145746487955).

Almost surely, 2^{233566134001213} is an apocalyptic number.

It is an amenable number.

233566134001213 is a deficient number, since it is larger than the sum of its proper divisors (24765809806067).

233566134001213 is a wasteful number, since it uses less digits than its factorization.

233566134001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882416.

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 233566134001213 its reverse (312100431665332), we get a palindrome (545666565666545).

The spelling of 233566134001213 in words is "two hundred thirty-three trillion, five hundred sixty-six billion, one hundred thirty-four million, one thousand, two hundred thirteen".