233231203213 has 4 divisors (see below), whose sum is σ = 235851778620. Its totient is φ = 230610627808.

The previous prime is 233231203199. The next prime is 233231203217. The reversal of 233231203213 is 312302132332.

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 79263645444 + 153967557769 = 281538^2 + 392387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233231203213 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 (233231203217) 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, 1310287570 + ... + 1310287747.

It is an arithmetic number, because the mean of its divisors is an integer number (58962944655).

Almost surely, 2^233231203213 is an apocalyptic number.

It is an amenable number.

233231203213 is a deficient number, since it is larger than the sum of its proper divisors (2620575407).

233231203213 is an equidigital number, since it uses as much as digits as its factorization.

233231203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620575406.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 233231203213 its reverse (312302132332), we get a palindrome (545533335545).

The spelling of 233231203213 in words is "two hundred thirty-three billion, two hundred thirty-one million, two hundred three thousand, two hundred thirteen".